CVE-2026-27459

CRITICAL

9.8

Descripcion

pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.

Detalles CVE

Puntuacion CVSS v3.19.8

SeveridadCRITICAL

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado3/18/2026

Ultima modificacion3/25/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

pyopenssl:pyopenssl

Debilidades (CWE)

CWE-120

Referencias

https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst(security-advisories@github.com)

https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408(security-advisories@github.com)

https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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