GitHub Advisoryadvisory · PyPI

GHSA-2fqr-mr3j-6wp8 aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

LOW Published 2026-06-15 Modified 2026-11-03 Official page ↗
Aliases
CVE-2026-54279
Ecosystem
PyPI
Packages
aiohttp
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-665
Reviewed
2026-06-15

Affected packages

• PyPI aiohttp: < 3.14.1 → fixed in 3.14.1

Description

Summary Host-only cookies that are saved with ``CookieJar.save()`` and then restored later with ``CookieJar.load()`` lose their host-only status. Impact Host-only cookies that have been loaded from disk may get sent to subdomains that previously should have been disallowed. ----- Patch: https://github.com/aio-libs/aiohttp/commit/a329a7aacad5284f087af36103aff778746da0f2

Related

Alias · CVE (1)

  • CVE-2026-54279 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability

Weakness · CWE (1)

  • CWE-665 Improper Initialization weakness

References