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CVE-2026-34993

AIOHTTP Vulnerable to Deserialization of Untrusted Data

Published: Jun 2, 2026Updated: Jun 30, 2026 Sources: CVE List NVDCWE-502
6.4MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 97.2%
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 version 3.14.0, using ``CookieJar.load()`` with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:HUI:RS:CC:LI:HA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-502

Affected Products

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

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8
github.com
https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00
github.com
https://access.redhat.com/errata/RHSA-2026:24977
access.redhat.com
and 3 more references View all →
News mentions
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