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.

Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-2vrm-gr82-f7m5 AIOHTTP has CRLF injection through multipart part content type header construction
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 02 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-93
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

threat_severity

Moderate


Wed, 01 Apr 2026 23:45:00 +0000

Type Values Removed Values Added
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.
Title AIOHTTP: CRLF injection in multipart part content type header construction
Weaknesses CWE-113
References
Metrics cvssV4_0

{'score': 2.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-01T20:09:50.936Z

Reserved: 2026-03-30T16:03:31.047Z

Link: CVE-2026-34514

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-01T21:16:59.417

Modified: 2026-04-01T21:16:59.417

Link: CVE-2026-34514

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-01T20:09:50Z

Links: CVE-2026-34514 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses