CVE-2026-3832
published 2026-04-30CVE-2026-3832: A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP)…
PriorityP421low3.7CVSS 3.1
AVNACHPRNUINSUCLINAN
EPSS
0.72%
50.1th percentile
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| gnu | gnutls | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | openshift_container_platform | — | — |
| ubuntu | gnutls28 | — | — |
CVSS provenance
nvdv3.13.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
vendor_ubuntu9.1CRITICAL
vendor_redhat3.7LOW
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VulDB
GnuTLS Certificate Status Protocol early validation
vuldb·2026-04-30·CVSS 3.7
CVE-2026-3832 [LOW] GnuTLS Certificate Status Protocol early validation
A vulnerability was found in GnuTLS. It has been classified as problematic. Affected is an unknown function of the component Certificate Status Protocol. This manipulation causes incorrect behavior order: early validation.
This vulnerability is tracked as CVE-2026-3832. The attack is possible to be carried out remotely. No exploit exists.
GHSA
GHSA-3rqj-4qqw-jgwr: A flaw was found in gnutls
ghsa_unreviewed·2026-04-30
CVE-2026-3832 [LOW] CWE-179 GHSA-3rqj-4qqw-jgwr: A flaw was found in gnutls
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.
Ubuntu
GnuTLS vulnerabilities
vendor_ubuntu·2026-05-20·CVSS 9.1
CVE-2026-42015 [CRITICAL] GnuTLS vulnerabilities
Title: GnuTLS vulnerabilities
Summary: Several security issues were fixed in GnuTLS.
Joshua Rogers discovered that GnuTLS did not properly handle malformed
DTLS handshake fragments in certain cases. A remote attacker could
possibly use this issue to obtain sensitive information, or cause a
denial of service. (CVE-2026-33845)
Haruto Kimura, Oscar Reparaz, and Zou Dikai discovered that GnuTLS did
not properly validate DTLS handshake fragment lengths in certain cases. A
remote attacker could possibly use this issue to cause GnuTLS to crash,
resulting in a denial of service, or execute arbitrary code.
(CVE-2026-33846)
Oleh Konko and Joshua Rogers discovered that GnuTLS did not properly
validate OCSP responses in certain cases. A remote attacker could
possibly use this issue to bypass certi
Red Hat
gnutls: gnutls: Security bypass allows acceptance of revoked server certificates via crafted OCSP response
vendor_redhat·2026-04-30·CVSS 3.7
CVE-2026-3832 [LOW] CWE-179 gnutls: gnutls: Security bypass allows acceptance of revoked server certificates via crafted OCSP response
gnutls: gnutls: Security bypass allows acceptance of revoked server certificates via crafted OCSP response
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.
Statement: This issue has a LOW impact. A flaw in gnutls' OCSP stapling implementation allows a client with OCSP verification enabled to accept a revoked server certificate. This occurs when a multi-record OCSP response is stapled, and the client incorrectly reads the certificate status fr
No detection rules found.
No public exploits indexed.
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/security/cve/CVE-2026-3832https://bugzilla.redhat.com/show_bug.cgi?id=2445762https://gitlab.com/gnutls/gnutls/-/issues/1801https://gitlab.com/gnutls/gnutls/-/issues/1801
2026-04-30
Published