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CVE-2026-3832

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

Published: Apr 30, 2026Updated: Sep 1, 2026 Sources: CVE List NVD BDUCWE-179
3.7LOW
NVD MITRE
EPSS Score
0.7%
Top 46.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-179

Affected Products

Red Hat Inc.
commercial·USaka Red Hat, redhat
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat Hardened ImagesOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Discovery 2On-premWeb App
Enterprise Software / itsm-monitoring
Red Hat Update Infrastructure 5
Operating Systems / linux-distro
Red Hat OpenShift Container Platform 4SaaSSaaS Service
Cloud & SaaS / container-orchestration
hardened imagesOn-prem
Operating Systems / linux-distro
Novell Inc.
commercial·US
openSUSE TumbleweedOn-prem
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
Free Software Foundation, Inc.
oss-project·USaka free software foundation, fsf
GnuTLS
OSS Libraries
gnu
oss-project·USaka g. nu
gnutls
OSS Libraries
and 9 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Is your org exposed to CVE-2026-3832?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://gitlab.com/gnutls/gnutls/-/issues/1801
gitlab.com
https://access.redhat.com/security/cve/cve-2026-3832
access.redhat.com
https://security-tracker.debian.org/tracker/CVE-2026-3832
security-tracker.debian.org
and 11 more references View all →

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