🚨 [security] Update nuxt 2.16.3 → 4.2.2 (major) #749

depfu · 2025-12-16T17:40:29Z

🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ nuxt (2.16.3 → 4.2.2) · Repo

Security Advisories 🚨

🚨 Nuxt has Client-Side Path Traversal in Nuxt Island Payload Revival

Summary

A client-side path traversal vulnerability in Nuxt's Island payload revival mechanism allowed attackers to manipulate client-side requests to different endpoints within the same application domain when specific prerendering conditions are met.

Technical Details

The vulnerability occurs in the client-side payload revival process (revive-payload.client.ts) where Nuxt Islands are automatically fetched when encountering serialized __nuxt_island objects. The issue affects the following flow:

During prerendering, if an API endpoint returns user-controlled data containing a crafted __nuxt_island object

This data gets serialized with devalue.stringify and stored in the prerendered page

When a client navigates to the prerendered page, devalue.parse deserializes the payload

The Island reviver attempts to fetch /__nuxt_island/${key}.json where key could contain path traversal sequences

Prerequisites for Exploitation

This vulnerability requires all of the following conditions:

Prerendered pages: The application must use Nuxt's prerendering feature (nitro.prerender)

Attacker-controlled API responses: The attacker must be able to control the response content of an API endpoint that is called during prerendering via useFetch, useAsyncData, or similar composables

Client-side navigation: A user must navigate to the prerendered page (not during initial SSR hydration)

Attack Scenario
// Malicious API response during prerendering
{
  "__nuxt_island": {
    "key": "../../../../internal/service",
    "params": { "action": "probe" }
  }
}
This could cause the client to make requests to /__nuxt_island/../../../../internal/service.json if path traversal is not properly handled by the server.

Impact Assessment

Limited Impact: The vulnerability has a low severity due to the highly specific prerequisites

No Direct Data Exfiltration: The vulnerability does not directly expose sensitive data

Client-Side Only: Requests originate from the client, not the server

Mitigation

Action Required:

Update to Nuxt 3.19.0+ or 4.1.0+ immediately

Review any prerendered pages that fetch external or user-controlled data

Temporary Workarounds (if immediate update is not possible):

Disable prerendering for pages that fetch user-controlled data

Implement strict input validation on API endpoints used during prerendering

Use allowlists for API response structures during prerendering

Fix Details

The fix implemented validation for Island keys in revive-payload.server.ts:

Island keys must match the pattern /^[a-z][a-z\d-]*_[a-z\d]+$/i

Maximum length of 100 characters

Prevents path traversal and special characters

🚨 Nuxt has Client-Side Path Traversal in Nuxt Island Payload Revival

Summary

A client-side path traversal vulnerability in Nuxt's Island payload revival mechanism allowed attackers to manipulate client-side requests to different endpoints within the same application domain when specific prerendering conditions are met.

Technical Details

The vulnerability occurs in the client-side payload revival process (revive-payload.client.ts) where Nuxt Islands are automatically fetched when encountering serialized __nuxt_island objects. The issue affects the following flow:

During prerendering, if an API endpoint returns user-controlled data containing a crafted __nuxt_island object

This data gets serialized with devalue.stringify and stored in the prerendered page

When a client navigates to the prerendered page, devalue.parse deserializes the payload

The Island reviver attempts to fetch /__nuxt_island/${key}.json where key could contain path traversal sequences

Prerequisites for Exploitation

This vulnerability requires all of the following conditions:

Prerendered pages: The application must use Nuxt's prerendering feature (nitro.prerender)

Attacker-controlled API responses: The attacker must be able to control the response content of an API endpoint that is called during prerendering via useFetch, useAsyncData, or similar composables

Client-side navigation: A user must navigate to the prerendered page (not during initial SSR hydration)

Attack Scenario
// Malicious API response during prerendering
{
  "__nuxt_island": {
    "key": "../../../../internal/service",
    "params": { "action": "probe" }
  }
}
This could cause the client to make requests to /__nuxt_island/../../../../internal/service.json if path traversal is not properly handled by the server.

Impact Assessment

Limited Impact: The vulnerability has a low severity due to the highly specific prerequisites

No Direct Data Exfiltration: The vulnerability does not directly expose sensitive data

Client-Side Only: Requests originate from the client, not the server

Mitigation

Action Required:

Update to Nuxt 3.19.0+ or 4.1.0+ immediately

Review any prerendered pages that fetch external or user-controlled data

Temporary Workarounds (if immediate update is not possible):

Disable prerendering for pages that fetch user-controlled data

Implement strict input validation on API endpoints used during prerendering

Use allowlists for API response structures during prerendering

Fix Details

The fix implemented validation for Island keys in revive-payload.server.ts:

Island keys must match the pattern /^[a-z][a-z\d-]*_[a-z\d]+$/i

Maximum length of 100 characters

Prevents path traversal and special characters

🚨 Nuxt allows DOS via cache poisoning with payload rendering response

Summary

By sending a crafted HTTP request to a server behind an CDN, it is possible in some circumstances to poison the CDN cache and highly impacts the availability of a site.

It is possible to craft a request, such as https://mysite.com/?/_payload.json which will be rendered as JSON. If the CDN in front of a Nuxt site ignores the query string when determining whether to cache a route, then this JSON response could be served to future visitors to the site.

Impact

An attacker can perform this attack to a vulnerable site in order to make a site unavailable indefinitely. It is also possible in the case where the cache will be reset to make a small script to send a request each X seconds (=caching duration) so that the cache is permanently poisoned making the site completely unavailable.

Conclusion :

This is similar to a vulnerability in Next.js that resulted in CVE-2024-46982 (and see this article, in particular the "Internal URL parameter and pageProps" part, the latter being very similar to the one concerning us here.)

🚨 nuxt vulnerable to Cross-site Scripting in navigateTo if used after SSR

Summary

The navigateTo function attempts to blockthe javascript: protocol, but does not correctly use API's provided by unjs/ufo. This library also contains parsing discrepancies.

Details

The function first tests to see if the specified URL has a protocol. This uses the unjs/ufo package for URL parsing. This function works effectively, and returns true for a javascript: protocol.

After this, the URL is parsed using the parseURL function. This function will refuse to parse poorly formatted URLs. Parsing javascript:alert(1) returns null/"" for all values.

Next, the protocol of the URL is then checked using the isScriptProtocol function. This function simply checks the input against a list of protocols, and does not perform any parsing.

The combination of refusing to parse poorly formatted URLs, and not performing additional parsing means that script checks fail as no protocol can be found. Even if a protocol was identified, whitespace is not stripped in the parseURL implementation, bypassing the isScriptProtocol checks.

Certain special protocols are identified at the top of parseURL. Inserting a newline or tab into this sequence will block the special protocol check, and bypass the latter checks.

PoC

POC - https://stackblitz.com/edit/nuxt-xss-navigateto?file=app.vue

Attempt payload X, then attempt payload Y.

Impact

XSS, access to cookies, make requests on user's behalf.

Recommendations

As always with these bugs, the URL constructor provided by the browser is always the safest method of parsing a URL.

Given the cross-platform requirements of nuxt/ufo a more appropriate solution is to make parsing consistent between functions, and to adapt parsing to be more consistent with the WHATWG URL specification.

Note

I've reported this vulnerability here as it is unclear if this is a bug in ufo or a misuse of the ufo library.

This ONLY has impact after SSR has occurred, the javascript: protocol within a location header does not trigger XSS.

🚨 Nuxt vulnerable to remote code execution via the browser when running the test locally

Summary

Due to the insufficient validation of the path parameter in the NuxtTestComponentWrapper, an attacker can execute arbitrary JavaScript on the server side, which allows them to execute arbitrary commands.

Details

While running the test, a special component named NuxtTestComponentWrapper is available.

nuxt/packages/nuxt/src/app/components/nuxt-root.vue

Lines 42 to 43 in 4779f59

    <tbody>

    <tr class="border-0">
      <td id="L43" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="43"></td>
      <td id="LC43" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-s1">  .<span class="pl-c1">then</span>(<span class="pl-smi">r</span> <span class="pl-k">=&gt;</span> <span class="pl-smi">r</span>.<span class="pl-en">default</span>(<span class="pl-k">import</span>.meta.server ? url : window.location.href)))</span> </td>
    </tr>
</tbody>

	const SingleRenderer = import.meta.test && import.meta.dev && import.meta.server && url.startsWith('/__nuxt_component_test__/') && defineAsyncComponent(() => import('#build/test-component-wrapper.mjs')

This component loads the specified path as a component and renders it.

nuxt/packages/nuxt/src/app/components/test-component-wrapper.ts

Lines 9 to 27 in 4779f59

    <tbody>

    <tr class="border-0">
      <td id="L10" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="10"></td>
      <td id="LC10" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">   <span class="pl-c1">name</span>: <span class="pl-s">'NuxtTestComponentWrapper'</span><span class="pl-kos">,</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L11" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="11"></td>
      <td id="LC11" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">  </td>
    </tr>

    <tr class="border-0">
      <td id="L12" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="12"></td>
      <td id="LC12" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">   <span class="pl-k">async</span> <span class="pl-en">setup</span> <span class="pl-kos">(</span><span class="pl-s1">props</span><span class="pl-kos">,</span> <span class="pl-kos">{</span> attrs <span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L13" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="13"></td>
      <td id="LC13" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-k">const</span> <span class="pl-s1">query</span> <span class="pl-c1">=</span> <span class="pl-en">parseQuery</span><span class="pl-kos">(</span><span class="pl-en">parseURL</span><span class="pl-kos">(</span><span class="pl-s1">url</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-c1">search</span><span class="pl-kos">)</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L14" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="14"></td>
      <td id="LC14" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-k">const</span> <span class="pl-s1">urlProps</span> <span class="pl-c1">=</span> <span class="pl-s1">query</span><span class="pl-kos">.</span><span class="pl-c1">props</span> ? <span class="pl-en">destr</span><span class="pl-kos">&lt;</span><span class="pl-smi">Record</span><span class="pl-kos">&lt;</span><span class="pl-smi">string</span><span class="pl-kos">,</span> <span class="pl-smi">any</span><span class="pl-kos">&gt;</span><span class="pl-kos">&gt;</span><span class="pl-kos">(</span><span class="pl-s1">query</span><span class="pl-kos">.</span><span class="pl-c1">props</span> <span class="pl-k">as</span> <span class="pl-smi">string</span><span class="pl-kos">)</span> : <span class="pl-kos">{</span><span class="pl-kos">}</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L15" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="15"></td>
      <td id="LC15" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-k">const</span> <span class="pl-s1">path</span> <span class="pl-c1">=</span> <span class="pl-en">resolve</span><span class="pl-kos">(</span><span class="pl-s1">query</span><span class="pl-kos">.</span><span class="pl-c1">path</span> <span class="pl-k">as</span> <span class="pl-smi">string</span><span class="pl-kos">)</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L16" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="16"></td>
      <td id="LC16" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-c1">!</span><span class="pl-s1">path</span><span class="pl-kos">.</span><span class="pl-en">startsWith</span><span class="pl-kos">(</span><span class="pl-s1">devRootDir</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L17" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="17"></td>
      <td id="LC17" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">       <span class="pl-k">throw</span> <span class="pl-k">new</span> <span class="pl-smi">Error</span><span class="pl-kos">(</span><span class="pl-s">`[nuxt] Cannot access path outside of project root directory: \`<span class="pl-s1"><span class="pl-kos">${</span><span class="pl-s1">path</span><span class="pl-kos">}</span></span>\`.`</span><span class="pl-kos">)</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L18" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="18"></td>
      <td id="LC18" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-kos">}</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L19" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="19"></td>
      <td id="LC19" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-k">const</span> <span class="pl-s1">comp</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-k">import</span><span class="pl-kos">(</span><span class="pl-c">/* @vite-ignore */</span> <span class="pl-s1">query</span><span class="pl-kos">.</span><span class="pl-c1">path</span> <span class="pl-k">as</span> <span class="pl-smi">string</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">then</span><span class="pl-kos">(</span><span class="pl-s1">r</span> <span class="pl-c1">=&gt;</span> <span class="pl-s1">r</span><span class="pl-kos">.</span><span class="pl-c1">default</span><span class="pl-kos">)</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L20" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="20"></td>
      <td id="LC20" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-k">return</span> <span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-c1">=&gt;</span> <span class="pl-kos">[</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L21" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="21"></td>
      <td id="LC21" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">       <span class="pl-en">h</span><span class="pl-kos">(</span><span class="pl-s">'div'</span><span class="pl-kos">,</span> <span class="pl-s">'Component Test Wrapper for '</span> <span class="pl-c1">+</span> <span class="pl-s1">query</span><span class="pl-kos">.</span><span class="pl-c1">path</span><span class="pl-kos">)</span><span class="pl-kos">,</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L22" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="22"></td>
      <td id="LC22" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">       <span class="pl-en">h</span><span class="pl-kos">(</span><span class="pl-s">'div'</span><span class="pl-kos">,</span> <span class="pl-kos">{</span> <span class="pl-c1">id</span>: <span class="pl-s">'nuxt-component-root'</span> <span class="pl-kos">}</span><span class="pl-kos">,</span> <span class="pl-kos">[</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L23" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="23"></td>
      <td id="LC23" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">         <span class="pl-en">h</span><span class="pl-kos">(</span><span class="pl-s1">comp</span><span class="pl-kos">,</span> <span class="pl-kos">{</span> ...<span class="pl-s1">attrs</span><span class="pl-kos">,</span> ...<span class="pl-s1">props</span><span class="pl-kos">,</span> ...<span class="pl-s1">urlProps</span> <span class="pl-kos">}</span><span class="pl-kos">)</span><span class="pl-kos">,</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L24" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="24"></td>
      <td id="LC24" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">       <span class="pl-kos">]</span><span class="pl-kos">)</span><span class="pl-kos">,</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L25" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="25"></td>
      <td id="LC25" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">     <span class="pl-kos">]</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L26" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="26"></td>
      <td id="LC26" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">   <span class="pl-kos">}</span><span class="pl-kos">,</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L27" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="27"></td>
      <td id="LC27" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-kos">}</span><span class="pl-kos">)</span> </td>
    </tr>
</tbody>

	export default (url: string) => defineComponent({

There is a validation for the path parameter to check whether the path traversal is performed, but this check is not sufficient.

nuxt/packages/nuxt/src/app/components/test-component-wrapper.ts

Lines 15 to 19 in 4779f59

    <tbody>

    <tr class="border-0">
      <td id="L16" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="16"></td>
      <td id="LC16" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-c1">!</span><span class="pl-s1">path</span><span class="pl-kos">.</span><span class="pl-en">startsWith</span><span class="pl-kos">(</span><span class="pl-s1">devRootDir</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L17" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="17"></td>
      <td id="LC17" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line">   <span class="pl-k">throw</span> <span class="pl-k">new</span> <span class="pl-smi">Error</span><span class="pl-kos">(</span><span class="pl-s">`[nuxt] Cannot access path outside of project root directory: \`<span class="pl-s1"><span class="pl-kos">${</span><span class="pl-s1">path</span><span class="pl-kos">}</span></span>\`.`</span><span class="pl-kos">)</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L18" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="18"></td>
      <td id="LC18" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-kos">}</span> </td>
    </tr>

    <tr class="border-0">
      <td id="L19" class="blob-num border-0 px-3 py-0 color-bg-default" data-line-number="19"></td>
      <td id="LC19" class="blob-code border-0 px-3 py-0 color-bg-default blob-code-inner js-file-line"> <span class="pl-k">const</span> <span class="pl-s1">comp</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-k">import</span><span class="pl-kos">(</span><span class="pl-c">/* @vite-ignore */</span> <span class="pl-s1">query</span><span class="pl-kos">.</span><span class="pl-c1">path</span> <span class="pl-k">as</span> <span class="pl-smi">string</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">then</span><span class="pl-kos">(</span><span class="pl-s1">r</span> <span class="pl-c1">=&gt;</span> <span class="pl-s1">r</span><span class="pl-kos">.</span><span class="pl-c1">default</span><span class="pl-kos">)</span> </td>
    </tr>
</tbody>

	const path = resolve(query.path as string)

Since import(...) uses query.path instead of the normalized path, a non-normalized URL can reach the import(...) function.
For example, passing something like ./components/test normalizes path to /root/directory/components/test, but import(...) still receives ./components/test.

By using this behavior, it's possible to load arbitrary JavaScript by using the path like the following:

data:text/javascript;base64,Y29uc29sZS5sb2coMSk

Since resolve(...) resolves the filesystem path, not the URI, the above URI is treated as a relative path, but import(...) sees it as an absolute URI, and loads it as a JavaScript.

PoC

Create a nuxt project and run it in the test mode:

npx nuxi@latest init test
cd test
TEST=true npm run dev

Open the following URL:

http://localhost:3000/__nuxt_component_test__/?path=data%3Atext%2Fjavascript%3Bbase64%2CKGF3YWl0IGltcG9ydCgnZnMnKSkud3JpdGVGaWxlU3luYygnL3RtcC90ZXN0JywgKGF3YWl0IGltcG9ydCgnY2hpbGRfcHJvY2VzcycpKS5zcGF3blN5bmMoIndob2FtaSIpLnN0ZG91dCwgJ3V0Zi04Jyk

Confirm that the output of whoami is written to /tmp/test

Demonstration video: https://www.youtube.com/watch?v=FI6mN8WbcE4

Impact

Users who open a malicious web page in the browser while running the test locally are affected by this vulnerability, which results in the remote code execution from the malicious web page.
Since web pages can send requests to arbitrary addresses, a malicious web page can repeatedly try to exploit this vulnerability, which then triggers the exploit when the test server starts.

🚨 nuxt Code Injection vulnerability

he Nuxt dev server between versions 3.4.0 and 3.4.3 is vulnerable to code injection when it is exposed publicly.

Release Notes

Too many releases to show here. View the full release notes.

Commits

See the full diff on Github. The new version differs by 47 commits:

✳️ autoprefixer (10.4.14 → 10.4.23) · Repo · Changelog

Release Notes

10.4.23

Reduced dependencies (by @hyperz111).

10.4.22

Fixed stretch prefixes on new Can I Use database.

Updated fraction.js.

10.4.21

Fixed old -moz- prefix for :placeholder-shown (by @Marukome0743).

10.4.20

Fixed fit-content prefix for Firefox.

10.4.19

Removed end value has mixed support, consider using flex-end warning since end/start now have good support.

10.4.18

Fixed removing -webkit-box-orient on -webkit-line-clamp (@Goodwine).

10.4.17

Fixed user-select: contain prefixes.

10.4.16

Improved performance (by @romainmenke).

Fixed docs (by @coliff).

10.4.15 (from changelog)

Fixed ::backdrop prefixes (by 一丝).

Fixed docs (by Christian Oliff).

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 50 commits:

✳️ postcss (8.4.21 → 8.5.6) · Repo · Changelog

Security Advisories 🚨

🚨 PostCSS line return parsing error

An issue was discovered in PostCSS before 8.4.31. It affects linters using PostCSS to parse external Cascading Style Sheets (CSS). There may be \r discrepancies, as demonstrated by @font-face{ font:(\r/*);} in a rule.

This vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being originally included in a comment.

Release Notes

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Commits

See the full diff on Github. The new version differs by more commits than we can show here.

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Update nuxt to version 4.2.2

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depfu bot added the depfu label Dec 16, 2025

depfu bot mentioned this pull request Dec 16, 2025

🚨 [security] Update nuxt 2.16.3 → 4.2.1 (major) #743

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🚨 [security] Update nuxt 2.16.3 → 4.2.2 (major) #749

🚨 [security] Update nuxt 2.16.3 → 4.2.2 (major) #749

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🚨 [security] Update nuxt 2.16.3 → 4.2.2 (major) #749

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🚨 [security] Update nuxt 2.16.3 → 4.2.2 (major) #749

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depfu bot commented Dec 16, 2025

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✳️ nuxt (2.16.3 → 4.2.2) · Repo

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✳️ autoprefixer (10.4.14 → 10.4.23) · Repo · Changelog

10.4.15 (from changelog)

✳️ postcss (8.4.21 → 8.5.6) · Repo · Changelog

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