PT-2026-46099 · Pypi · Aiohttp

Published 2026-06-03 · Updated 2026-06-03

OSV

CVSS v3.1

6.4

Medium

Base vector

AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L

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

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

GHSA-JG22-MG44-37J8

Affected Products

Aiohttp

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-34993 · Security Note
• https://osv.dev/vulnerability/GHSA-jg22-mg44-37j8 · Vendor Advisory
• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8 · Note
• https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00 · Note
• https://github.com/aio-libs/aiohttp · Note