CVE-2026-69244

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.3, an out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response. An attacker controlled server, or possibly an accidental response, could trigger a DoS in the client. The vulnerable path was error message construction in aiohttp/_http_parser.pyx, where an llhttp error-position pointer was used to build a snippet for malformed chunked responses and malformed request or response bytes at the buffer end. This issue is fixed in version 3.14.3.

CVSS

No CVSS.

References

Link	Resource
https://github.com/aio-libs/aiohttp/commit/49f65d54150397892f7bcc4aae887767d51c322d
https://github.com/aio-libs/aiohttp/pull/13223
https://github.com/aio-libs/aiohttp/releases/tag/v3.14.3
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-cq5v-8q36-5273

Configurations

No configuration.

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) AIOHTTP es un framework asíncrono de cliente/servidor HTTP para asyncio y Python. Antes de la versión 3.14.3, podría ocurrir una lectura de montón fuera de límites en el analizador de respuestas C mientras se construía un mensaje de error para una respuesta malformada. Un servidor controlado por un atacante, o posiblemente una respuesta accidental, podría desencadenar un DoS en el cliente. La ruta vulnerable era la construcción del mensaje de error en aiohttp/_http_parser.pyx, donde se utilizaba un puntero de posición de error de llhttp para construir un fragmento para respuestas fragmentadas malformadas y bytes de solicitud o respuesta malformados al final del búfer. Este problema está solucionado en la versión 3.14.3.

Information

Published : 2026-08-03 21:16

Updated : 2026-10-23 21:10

NVD link : CVE-2026-69244

Mitre link : CVE-2026-69244

CVE.ORG link : CVE-2026-69244

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

CWE-400

Uncontrolled Resource Consumption

CWE-416

Use After Free

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