CVE-2026-54279 | BDVDB-2026-342125 Detail

aio-libsaiohttp

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.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-665 Improper Initialization

References#

Exploit#

No public exploit known

History#

Version 12026-06-22Record published in the CVE List.

Published

Published: 2026-06-22
Last modified: 2026-06-22

Vendor information

Vendor: aio-libs
Product: aiohttp

All aio-libs vulnerabilities

Score

1.3 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 42.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Initialization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 3.14.1
Fixed
Not stated

Scoring System

CVSS v4.0

1.3 Low

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	Passive
Vulnerable System Confidentiality	None
Vulnerable System Integrity	None
Vulnerable System Availability	None
Subsequent System Confidentiality	Low
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).