GitHub Advisoryadvisory · PyPI

GHSA-mqqc-3gqh-h2x8 AIOHTTP has unicode match groups in regexes for ASCII protocol elements

LOW Published 2026-01-05 Modified 2026-01-06 Official page ↗

Aliases: CVE-2025-69225
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-444
Reviewed: 2026-01-05

Affected packages

• PyPI aiohttp: < 3.13.3 → fixed in 3.13.3

Description

Summary The parser allows non-ASCII decimals to be present in the Range header. Impact There is no known impact, but there is the possibility that there's a method to exploit a request smuggling vulnerability. ---- Patch: https://github.com/aio-libs/aiohttp/commit/c7b7a044f88c71cefda95ec75cdcfaa4792b3b96

Related

Alias · CVE (1)

CVE-2025-69225 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability

Weakness · CWE (1)

CWE-444 Inconsistent Interpretation of HTTP Requests weakness

References