CVE-2026-3832

LOW

Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response

Title source: cna

Description

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.

References (9)

Core 9

Core References

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:20612

https://access.redhat.com/errata/RHSA-2026:20612

Vendor Advisory vendor-advisory x_refsource_redhat

https://access.redhat.com/errata/RHSA-2026:20613

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:26319

https://access.redhat.com/errata/RHSA-2026:26319

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:26409

https://access.redhat.com/errata/RHSA-2026:26409

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-3832

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2445762

https://bugzilla.redhat.com/show_bug.cgi?id=2445762

https://gitlab.com/gnutls/gnutls/-/issues/1801

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:29197

https://access.redhat.com/errata/RHSA-2026:29197

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:13274

https://access.redhat.com/errata/RHSA-2026:13274

Scores

CVSS v3 3.7

EPSS 0.0072

EPSS Percentile 49.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-179

Status published

Products (25)

gnu/gnutls

Red Hat/Red Hat Discovery 2 1782159791

Red Hat/Red Hat Discovery 2 1782166952

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 10 0:3.8.10-4.el10_2

Red Hat/Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.8.9-9.el10_0.19

Red Hat/Red Hat Enterprise Linux 6

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

... and 15 more

Published Apr 30, 2026

Tracked Since Apr 30, 2026