CVE-2026-34993
AIOHTTP Vulnerable to Deserialization of Untrusted Data
- State
- Published
- Severity
- 6.4 Medium
- Published
- Jun 2, 2026
- Updated
- Sep 17, 2026
- Reserved
- Mar 31, 2026
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 | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L | GitHub_M |
| 3.1 | 7.2 High | CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
aiohttpaio-libs |
|
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8
- https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00
- https://access.redhat.com/security/cve/CVE-2026-34993vdb-entry
- RHBZ#2484099issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34993.json
- https://access.redhat.com/errata/RHSA-2026:59135vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50319vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:63327vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:59136vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50336vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:63387vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:63386vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:63385vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:59518vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50357vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50479vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50340vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:54760vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:62336vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:62335vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:43038vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:42644vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:24977vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:37275vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:60520vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34456vendor-advisory
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