CVE-2026-34993

MEDIUM

AIOHTTP Vulnerable to Deserialization of Untrusted Data

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 6.4
EPSS 0.0011
EPSS Percentile 1.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-502
Status published
Products (3)
aio-libs/aiohttp < 3.14.0
aiohttp/aiohttp < 3.14.0
pypi/aiohttp 0 - 3.14.0PyPI
Published Jun 02, 2026
Tracked Since Jun 03, 2026