aio-libs aiohttp up to 3.13.2 web.static path traversal

Summaryinfo

A vulnerability was found in aio-libs aiohttp up to 3.13.2. It has been rated as critical. This affects the function web.static. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2025-69226. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in aio-libs aiohttp up to 3.13.2. It has been rated as critical. This issue affects the function web.static. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product 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 product 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-69226 since 12/29/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 281863 (Linux Distros Unpatched Vulnerability : CVE-2025-69226), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.13.3 eliminates this vulnerability. Applying the patch f2a86fd5ac0383000d1715afddfa704413f0711e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (281863) and EUVD (EUVD-2026-1046). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• aio-libs

Name

• aiohttp

Version

• 3.13.0
• 3.13.1
• 3.13.2

License

• open-source

Website

• Product: https://github.com/aio-libs/aiohttp/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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