---
schema_version: '1.0'
id: security-20260711-900f4a
url: https://osv.dev/vulnerability/GHSA-jg22-mg44-37j8
url_hash: 900f4ad8c1213c62ebad27846ef797d42119078d3d319e4183b30068943326fb
canonical_url: https://osv.dev/vulnerability/GHSA-jg22-mg44-37j8
source: osv:ghsa
category: security/library
category_raw: cve/library
region: null
tags:
- cve
- CVE-2026-34993
- GHSA-jg22-mg44-37j8
- severity:CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L
- aiohttp
- PyPI
lang: en
published_at: '2026-06-03T20:56:54Z'
fetched_at: '2026-07-11T06:37:17Z'
updated_at: '2026-07-11T06:38:28Z'
status: published
content_hash: f09da892dcfd3e5ea9a5c97ac64020190b2c778cd11c3e0956abee3466cee4f6
license_note: full
summary: AIOHTTP is Vulnerable to Deserialization of Untrusted Data
summary_source: rss
summary_en: AIOHTTP is Vulnerable to Deserialization of Untrusted Data
entities: []
key_facts: []
related: []
related_auto: []
title: 'CVE-2026-34993: AIOHTTP is Vulnerable to Deserialization of Untrusted Data'
---

# CVE-2026-34993: AIOHTTP is Vulnerable to Deserialization of Untrusted Data

## TL;DR
AIOHTTP is Vulnerable to Deserialization of Untrusted Data

## Key Points
- cve / CVE-2026-34993 / GHSA-jg22-mg44-37j8 / severity:CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L / aiohttp / PyPI

## Details
**Severity:** CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L
**Advisory:** GHSA-jg22-mg44-37j8 (CVE-2026-34993)

**Affected (your watchlist):**
- `PyPI:aiohttp` 3.13.3 → fixed in 3.14.0 [docker/docker-strands]

**Details:**
### 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

**References:**
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8
- https://nvd.nist.gov/vuln/detail/CVE-2026-34993
- https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00
- https://github.com/aio-libs/aiohttp

_Data: OSV.dev (upstream: ghsa) — https://osv.dev/vulnerability/GHSA-jg22-mg44-37j8_

## Source
元記事: [CVE-2026-34993: AIOHTTP is Vulnerable to Deserialization of Untrusted Data](https://osv.dev/vulnerability/GHSA-jg22-mg44-37j8) — published 2026-06-03T20:56:54Z