CVE-2026-54279CWE-665

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

Low · published June 22, 2026

CVSS v4.0
1.3
EPSS
0%
Percentile
41.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
1.3 · LOW
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
EPSS
0.00493 · 41.4th percentile
Weakness
CWE-665 · Improper Initialization
Published
2026-06-22T16:32Z
EPSS history
Timeline
  • 22 JUN 16:32Z
    AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence
    cvelistv5