AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, insufficient restrictions in header/trailer handling could cause uncapped memory usage. This issue has been patched in version 3.13.4.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-w2fm-2cpv-w7v5 aiohttp allows unlimited trailer headers, leading to possible uncapped memory usage
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
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:N/A:L'}

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, insufficient restrictions in header/trailer handling could cause uncapped memory usage. This issue has been patched in version 3.13.4.
Title AIOHTTP: Uncapped memory usage possible through aiohttp allowing unlimited trailer headers
Weaknesses CWE-400
CWE-770
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-01T20:08:08.800Z

Reserved: 2026-01-09T22:50:10.288Z

Link: CVE-2026-22815

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-01T21:16:58.513

Modified: 2026-04-01T21:16:58.513

Link: CVE-2026-22815

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-01T20:08:08Z

Links: CVE-2026-22815 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses