CVE-2026-34993
AIOHTTP Vulnerable to Deserialization of Untrusted Data
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.
INFO
Published Date :
June 2, 2026, 8:16 p.m.
Last Modified :
June 5, 2026, 1:44 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update aiohttp to version 3.14.0 or later.
- Sanitize untrusted input files before loading if on older versions.
Public PoC/Exploit Available at Github
CVE-2026-34993 has a 4 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34993.
| URL | Resource |
|---|---|
| https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00 | Patch |
| https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8 | Mitigation Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34993 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34993
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Makefile Python Shell
Local-first security scanning for AI applications and local LLM deployments
Python
Telegram VPN bot for self-hosted Ubuntu VDS. Manages Xray VLESS Reality, AmneziaWG, SOCKS5/Dante, and MTProto Proxy with user approval, audit logging, and traffic statistics.
aiogram amneziawg python selfhosted sqlite systemd telegram-bot ubuntu vless-reality vpn-bot wireguard xray mtproto proxy socks5 user-management
Python Shell Makefile
MVidarr - The Music Video Management System
HTML Python Shell JavaScript CSS TypeScript Batchfile Dockerfile Mako Go Template
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34993 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34993 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 05, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:* versions up to (excluding) 3.14.0 Added Reference Type GitHub, Inc.: https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8 Types: Mitigation, Patch, Vendor Advisory -
New CVE Received by [email protected]
Jun. 02, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L Added CWE CWE-502 Added Reference https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00 Added Reference https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8