aio-libs/aiohttp · Security
AIOHTTP is Vulnerable to Deserialization of Untrusted Data
- GHSA ID
- GHSA-jg22-mg44-37j8
- CVE ID
- CVE-2026-34993
- Severity
- medium
- Published
- Updated
- CVSS
- 6.4 · CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L
- CVSS v3
- 6.4 · CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L
Description
Summary
Using CookieJar.load() with untrusted input may allow arbitrary code execution.
Impact
Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications.
Workaround
If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitise the files before loading.
Patch: https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00
CWEs
- CWE-502 · Deserialization of Untrusted Data