CVE-2026-54279

CVE-2026-54279 affects the aiohttp library (Python asyncio framework). Prior to version 3.14.1, host-only cookies saved with CookieJar.save() and later restored with CookieJar.load() may lose their host-only status, effectively becoming domain cookies. The issue is fixed in aiohttp 3.14.1. Affect...

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

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:...

GHSA-2FQR-MR3J-6WP8 aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

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:...