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CVE-2026-54279

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

Published: Jun 22, 2026Updated: Jun 26, 2026 Sources: CVE List NVDCWE-665
7.5HIGH
NVD MITRE
EPSS Score
0.3%
Top 79.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-665

Affected Products

aiohttp
oss-project
aiohttpLibrary
OSS Libraries / web-framework
aio-libs
oss-projectaka aiohttp, aiohttp session, aiosmtpd
aiohttpLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/aio-libs/aiohttp/commit/a329a7aacad5284f087af36103aff778746da0f2
github.com
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2fqr-mr3j-6wp8
github.com

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