CVE-2026-27459

CRITICAL

9.8

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung9.8

SchweregradCRITICAL

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht3/18/2026

Zuletzt geandert3/25/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

pyopenssl:pyopenssl

Schwachen (CWE)

CWE-120

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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