CVSS 3.1
7.3 highCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HCVE-2026-34993
High (7.3) in aiohttp aiohttp. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in aiohttp 3.14.0.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-31)
- CWE
- CWE-502
- Published
- Modified
- Record from
- the NVD, synced
Affected
- aiohttp:aiohttp
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-jg22-mg44-37j8 | PyPI | aiohttp | <3.14.0 | 3.14.0 |
| PYSEC-2026-2104 | PyPI | aiohttp | <3.14.0 | 3.14.0 |
References
- https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8
- https://access.redhat.com/errata/RHSA-2026:24977
- https://access.redhat.com/errata/RHSA-2026:34456
- https://access.redhat.com/errata/RHSA-2026:37275