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fix: enforce 10 MB size limit on avatar uploads #658

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fix: enforce 10 MB size limit on avatar uploads #658

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62eb825
Enforce size limit on avatar uploads (10 MB)
neuron-tech-ai May 14, 2026
031198a
fix: validate avatar upload file extension against allowed image formats
neuron-tech-ai May 14, 2026
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26 changes: 23 additions & 3 deletions backend/routes/profiles.py
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Original file line number Diff line number Diff line change
Expand Up @@ -225,16 +225,36 @@ async def update_profile_sample(
return sample


AVATAR_MAX_FILE_SIZE = 10 * 1024 * 1024 # 10 MB
AVATAR_UPLOAD_CHUNK_SIZE = 1024 * 1024 # 1 MB


@router.post("/profiles/{profile_id}/avatar", response_model=models.VoiceProfileResponse)
async def upload_profile_avatar(
profile_id: str,
file: UploadFile = File(...),
db: Session = Depends(get_db),
):
"""Upload or update avatar image for a profile."""
with tempfile.NamedTemporaryFile(delete=False, suffix=Path(file.filename).suffix) as tmp:
content = await file.read()
tmp.write(content)
_ALLOWED_IMAGE_EXTS = {".png", ".jpg", ".jpeg", ".gif", ".webp", ".bmp", ".svg"}
_raw_ext = Path(file.filename or "").suffix.lower()
if _raw_ext and _raw_ext not in _ALLOWED_IMAGE_EXTS:
raise HTTPException(
status_code=400,
detail=f"Unsupported image format '{_raw_ext}'. Allowed: {sorted(_ALLOWED_IMAGE_EXTS)}",
)
suffix = _raw_ext if _raw_ext in _ALLOWED_IMAGE_EXTS else ".png"
with tempfile.NamedTemporaryFile(delete=False, suffix=suffix) as tmp:
total_size = 0
while chunk := await file.read(AVATAR_UPLOAD_CHUNK_SIZE):
total_size += len(chunk)
if total_size > AVATAR_MAX_FILE_SIZE:
Path(tmp.name).unlink(missing_ok=True)
raise HTTPException(
status_code=413,
detail=f"Avatar file too large (max {AVATAR_MAX_FILE_SIZE // (1024 * 1024)} MB)",
)
tmp.write(chunk)
tmp_path = tmp.name

try:
Expand Down