CVE-2026-54279

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

Published Jun 22, 2026 CVSS 4.0 · 1.3 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4876-1 python-aiohttp security update
Github GHSA Github GHSA GHSA-2fqr-mr3j-6wp8 aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence
History
Type Values Removed Values Added
First Time appeared Aio-libs
Aio-libs aiohttp
Vendors & Products Aio-libs
Aio-libs aiohttp
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence
Weaknesses CWE-665
References
Metrics cvssV4_0

{'score': 1.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 22, 2026, 5:40 PM
Reserved
Jun 12, 2026, 5:13 PM
Status
Analyzed
Published
Jun 22, 2026, 6:16 PM
Modified
Oct 25, 2026, 11:10 PM
Severity
Low
Public date
Jun 22, 2026, 4:32 PM