GitHub Advisoryadvisory · PyPI

GHSA-2vrm-gr82-f7m5 AIOHTTP has CRLF injection through multipart part content type header construction

LOW Published 2026-04-01 Modified 2026-04-06 Official page ↗
Aliases
CVE-2026-34514
Ecosystem
PyPI
Packages
aiohttp
Severity
Low
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Weaknesses
CWE-113
Reviewed
2026-04-01

Affected packages

• PyPI aiohttp: < 3.13.4 → fixed in 3.13.4

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

Related

Alias · CVE (1)

  • CVE-2026-34514 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability

Weakness · CWE (1)

  • CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers weakness

References