CVE-2026-34514

LOW EPSS 23.2%
Published Apr 1, 20263mo ago · Modified Jun 17, 20262w ago
2.7 CVSS 4.0
Low
Find Similar
Published Apr 1, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
2.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
23.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-113

Affected Products 1

VendorProductVersionRange
aiohttpaiohttp* <3.13.4

References 3

  • github.com https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06
    Patch
  • github.com https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
    Release Notes
  • github.com https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2vrm-gr82-f7m5
    PatchVendor Advisory

Remediation

  • github.com https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06
    Patch
  • github.com https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2vrm-gr82-f7m5
    PatchVendor Advisory