What is GHSA-2fqr-mr3j-6wp8?

GHSA-2fqr-mr3j-6wp8 is a security advisory published by GitHub Security Advisories with Low severity. aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

Which CVE IDs does GHSA-2fqr-mr3j-6wp8 cover?

GHSA-2fqr-mr3j-6wp8 covers the following CVE IDs: CVE-2026-54279. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-2fqr-mr3j-6wp8?

GHSA-2fqr-mr3j-6wp8 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

Which products are affected by GHSA-2fqr-mr3j-6wp8?

GHSA-2fqr-mr3j-6wp8 affects 1 product, including: pip/aiohttp:\u003c= 3.14.0.

GHSA-2fqr-mr3j-6wp8LowCVSS 7.5

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

Vendor

GitHub Security Advisories

Published

June 15, 2026

Last Modified

November 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-54279 →

📋 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

🎯 Affected products1

pip/aiohttp:<= 3.14.0

🔗 References (5)

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2fqr-mr3j-6wp8
https://nvd.nist.gov/vuln/detail/CVE-2026-54279
https://github.com/aio-libs/aiohttp/commit/a329a7aacad5284f087af36103aff778746da0f2
https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2026-2112.yaml
https://github.com/advisories/GHSA-2fqr-mr3j-6wp8