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CVE-2026-50269

AIOHTTP: CRLF injection in multipart headers PUBLISHED

Description (CNA)

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may be able to modify the request to inject headers or change the contents of the request. This vulnerability is fixed in 3.14.0.

Affected (CNA)

Vendor / productVersions
aio-libs / aiohttpaffected < 3.14.0

CWE

CWE-93, CWE-113

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.