CVE-2026-54279

AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

State: Published
Severity: 1.3 Low
Published: Jun 22, 2026
Updated: Jun 22, 2026
Reserved: Jun 12, 2026

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, host-only cookies that are saved with CookieJar.save() and then restored later with CookieJar.load() lose their host-only status. This vulnerability is fixed in 3.14.1.

Scores

CVSS	Score	Vector	Source
4.0	1.3 Low	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U	GitHub_M

Weaknesses

CWE-665 Improper Initialization

Affected Products

Product	Versions
aiohttpaio-libs	< 3.14.1Affected

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2fqr-mr3j-6wp8
https://github.com/aio-libs/aiohttp/commit/a329a7aacad5284f087af36103aff778746da0f2

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