CVE-2026-50269 (GCVE-0-2026-50269)
Vulnerability from cvelistv5 – Published: 2026-06-22 16:30 – Updated: 2026-06-22 17:22
VLAI
EPSS
VEX
Title
AIOHTTP: CRLF injection in multipart headers
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:22 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/bf8807… | x_refsource_MISC |
Impacted products
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