CVE-2026-34582

CRITICAL

9.1

Description

Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.

Details CVE

Score CVSS v3.19.1

SeveriteCRITICAL

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/7/2026

Derniere modification4/17/2026

Sourcenvd

Observations honeypot0

Produits affectes

botan_project:botan

Faiblesses (CWE)

CWE-841

References

https://github.com/randombit/botan/security/advisories/GHSA-pxcj-9ppx-g86g(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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