CVE-2025-69226

EUVD-2026-1046

05.01.2026, 23:15

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below enable an attacker to ascertain the existence of absolute path components through the path normalization logic for static files meant to prevent path traversal. If an application uses web.static() (not recommended for production deployments), it may be possible for an attacker to ascertain the existence of path components. This issue is fixed in version 3.13.3.

Path Traversal

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	5.3 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 19%

Affected Products (NVD)

Vendor	Product	Version
aiohttp	aiohttp	𝑥 < 3.13.3

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

python-aiohttp

bookworm	vulnerable
bookworm (security)	vulnerable
bullseye	vulnerable
bullseye (security)	vulnerable
forky	3.13.3-3 fixed
sid	3.13.3-3 fixed
trixie	vulnerable

Ubuntu Releases

Ubuntu Product

Codename

python-aiohttp

bionic	Fixed 3.0.1-1ubuntu0.1~esm6 released
focal	Fixed 3.6.2-1ubuntu1+esm5 released
jammy	Fixed 3.8.1-4ubuntu0.2+esm2 released
noble	Fixed 3.9.1-1ubuntu0.1+esm2 released
plucky	ignored
questing	Fixed 3.11.16-1ubuntu0.1 released
xenial	ignored

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References

https://github.com/aio-libs/aiohttp/commit/f2a86fd5ac0383000d1715afddfa704413f0711e

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-54jq-c3m8-4m76