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Potential fix for code scanning alert no. 27: Uncontrolled data used in path expression#23

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ArshVermaGit merged 2 commits into
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alert-autofix-30
May 21, 2026
Merged

Potential fix for code scanning alert no. 27: Uncontrolled data used in path expression#23
ArshVermaGit merged 2 commits into
mainfrom
alert-autofix-30

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Potential fix for https://github.com/ArshVermaGit/SentinelOps-Autonomous-DevOps-AI/security/code-scanning/27

General fix: ensure user-provided repo paths are validated with a dedicated “safe canonical path” gate before any filesystem sink use, and enforce that the resulting canonical path is strictly inside the allowed root and not a symlinked repo directory.

Best single fix here: strengthen _validate_repo_path_for_linking in sentinelops-backend/app/services/local_git_service.py by rejecting symlinked repository directories (normalized) before calling os.path.isdir(normalized). This prevents attackers from linking a symlink path that resolves unexpectedly and also makes taint-to-sink flow more explicitly guarded.

Change region:

  • File: sentinelops-backend/app/services/local_git_service.py
  • Method: _validate_repo_path_for_linking
  • Around current lines 136–143.

No new imports or dependencies are required.

Suggested fixes powered by Copilot Autofix. Review carefully before merging.

…in path expression

Co-authored-by: Arsh Verma <arshverma.dev@gmail.com>

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
if not self._is_within_allowed_root(normalized):
return ""
# Do not allow linking via symlinked repository directories.
if os.path.islink(normalized):
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This looks like a sensible hardening step with minimal functional impact. Rejecting symlinked repository directories early in _validate_repo_path_for_linking strengthens the trust boundary around repo path handling and reduces the risk of unexpected path resolution outside the intended workspace. I also like that this check happens before the filesystem existence validation, since it makes the sanitization flow more explicit and easier to reason about from both a security and static-analysis perspective. Assuming symlinked repos are not an intended supported use case, this seems like a clean way to tighten validation without changing normal behavior for valid linked repositories.

…ed in path expression'

Co-authored-by: Arsh Verma <arshverma.dev@gmail.com>

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
@ArshVermaGit ArshVermaGit marked this pull request as ready for review May 21, 2026 20:57
@ArshVermaGit ArshVermaGit merged commit fe0bfbc into main May 21, 2026
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2 participants