Vulnerability CVE-2026-3832: Information

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.

Severity: LOW (3.7)

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

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-3832

Published: April 30, 2026

Modified: May 11, 2026

Error type identifier: CWE-179

Fixed packages

Package name	Branch	Fixed in version	Version from repository	Errata ID	Task #	State
gnutls30	sisyphus	3.8.13-alt1	3.8.13-alt1	ALT-PU-2026-7123-1	417120	Fixed
gnutls30	sisyphus_e2k	3.8.13-alt1	3.8.13-alt1	ALT-PU-2026-7620-1	-	Fixed
gnutls30	sisyphus_riscv64	3.8.13-alt1	3.8.13-alt1	ALT-PU-2026-7535-1	-	Fixed
gnutls30	sisyphus_loongarch64	3.8.13-alt1	3.8.13-alt1	ALT-PU-2026-7498-1	-	Fixed
gnutls30	p11	3.8.13-alt1	3.8.13-alt1	ALT-PU-2026-7127-2	417121	Fixed

References to Advisories, Solutions, and Tools

Hyperlink	Resource
https://access.redhat.com/errata/RHSA-2026:13274	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-3832	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2445762	Issue Tracking Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/issues/1801	Exploit Issue Tracking Vendor Advisory

Affected configurations:
1. cpe:2.3:a:gnu:gnutls:-:*:*:*:*:*:*:*
  cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
  cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
  cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
  cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

Version: v26.5.1