CVE-2025-69227

Publication date 6 January 2026

Last updated 16 February 2026

Ubuntu priority

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements are bypassed, resulting in a DoS attack when processing a POST body. If optimizations are enabled (-O or PYTHONOPTIMIZE=1), and the application includes a handler that uses the Request.post() method, then an attacker may be able to execute a DoS attack with a specially crafted message. This issue is fixed in version 3.13.3.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
python-aiohttp	26.04 LTS resolute	Not affected
	25.10 questing	Fixed 3.11.16-1ubuntu0.1
	25.04 plucky	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 3.9.1-1ubuntu0.1+esm2
	22.04 LTS jammy	Fixed 3.8.1-4ubuntu0.2+esm2
	20.04 LTS focal	Fixed 3.6.2-1ubuntu1+esm5
	18.04 LTS bionic	Ignored backporting risks regression
	16.04 LTS xenial	Ignored end of ESM support, was ignored [backporting risks regression]

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
python-aiohttp	Upstream: bc1319e

References

Related Ubuntu Security Notices (USN)

USN-8032-1
AIOHTTP vulnerabilities
13 February 2026