CVE-2026-3832: low-severity vulnerability in gnutls
Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response
Published · Updated
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.7epss 0.8%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
gnutlsRed Hat · Cert Manager support for Red Hat OpenShift release 1.17Red Hat · Cert Manager support for Red Hat OpenShift release 1.18Red Hat · Cert Manager support for Red Hat OpenShift release 1.20Red Hat · Red Hat Discovery 2Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Hardened ImagesRed Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat Update Infrastructure 5Related CVEs — gnutls
In the same product, most dangerous first.
CVE-2026-33845HIGHGnutls: gnutls: denial of service via dtls zero-length fragmentEPSS 2.1%CVE-2024-0553HIGHGnutls: incomplete fix for cve-2023-5981EPSS 1.6%CVE-2024-0567HIGHGnutls: rejects certificate chain with distributed trustEPSS 1.4%CVE-2026-1584HIGHGnutls: gnutls: remote denial of service via crafted clienthello with invalid psk binderEPSS 1.4%CVE-2026-42009HIGHGnutls: gnutls: denial of service via dtls packet reordering vulnerabilityEPSS 1.3%CVE-2026-2100MEDIUMP11-kit: null dereference via c_derivekey with specific null parametersEPSS 1.3%
References
https://access.redhat.com/errata/RHSA-2026:13274https://access.redhat.com/errata/RHSA-2026:20612https://access.redhat.com/errata/RHSA-2026:20613https://access.redhat.com/errata/RHSA-2026:26319https://access.redhat.com/errata/RHSA-2026:26409https://access.redhat.com/errata/RHSA-2026:29197https://access.redhat.com/errata/RHSA-2026:58981https://access.redhat.com/errata/RHSA-2026:72502https://access.redhat.com/errata/RHSA-2026:82304https://access.redhat.com/errata/RHSA-2026:82322https://access.redhat.com/errata/RHSA-2026:82347https://access.redhat.com/errata/RHSA-2026:82354