AIOHTTP has CRLF injection through multipart part content type header construction
GHSA-2vrm-gr82-f7m5 · CVE-2026-34514 · PYSEC-2026-2096
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Description
Summary
An attacker who controls the content_type parameter in aiohttp could use this to inject extra headers or similar exploits.
Impact
If an application allows untrusted data to be used for the multipart content_type parameter when constructing a request, an attacker may be able to manipulate the request to send something other than what the developer intended.
Patch: https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06
References
- WEB https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2vrm-gr82-f7m5
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-34514
- WEB https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06
- PACKAGE https://github.com/aio-libs/aiohttp
- WEB https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
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