CVE-2026-34514

5.3 MEDIUM
Published: April 01, 2026 Modified: April 15, 2026
View on NVD

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the content_type parameter in aiohttp could use this to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06
Source: security-advisories@github.com
Patch
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
Source: security-advisories@github.com
Release Notes
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2vrm-gr82-f7m5
Source: security-advisories@github.com
Patch Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.0%
12th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-113

Affected Vendors

aiohttp

Related CVEs

CVE-2026-6058 4.5
CVE-2026-40496 N/A
CVE-2026-40250 N/A
CVE-2026-40244 N/A
CVE-2026-39973 7.1