CVE-2026-27459

CRITICAL

9.8

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.19.8

SeveridadeCRITICAL

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/18/2026

Ultima modificacao3/25/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

pyopenssl:pyopenssl

Fraquezas (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)

Correlacoes IOC

Sem correlacoes registradas

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