CVE-2026-3833

Technical details for CVE-2026-3833 are not publicly available in the provided documents; OpenSUSE/PTSecurity entries reference fixes but do not expose affected components, impact, or mitigation here. Monitor for updates.

CVE-2026-3833

A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of nameConstraints labels, specifically for dNSName DNS or rfc822Name email constraints within excludedSubtrees or permittedSubtrees. A remote attacker can exploit this by crafting a leaf...

EUVD-2026-26403

A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of nameConstraints labels, specifically for dNSName DNS or rfc822Name email constraints within excludedSubtrees or permittedSubtrees. A remote attacker can exploit this by crafting a leaf...

CVE-2026-33845

A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service. Mitigati...

CVE-2026-3833 Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison

A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of nameConstraints labels, specifically for dNSName DNS or rfc822Name email constraints within excludedSubtrees or permittedSubtrees. A remote attacker can exploit this by crafting a leaf...

Linux Distros Unpatched Vulnerability : CVE-2026-42010

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in gnutls. Servers configured with RSA-PSK RivestShamirAdleman Pre-Shared Key wrongfully matched usernames containing a NUL character with...

PT-2026-37434

Name of the Vulnerable Software and Affected Versions gnutls versions prior to 3.8.13-1.1 Description No detailed information was provided regarding the nature of the security issues fixed in this package. Recommendations Update to version 3.8.13-1.1...

Linux Distros Unpatched Vulnerability : CVE-2026-42012

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource...

PT-2026-37376

Name of the Vulnerable Software and Affected Versions gnutls versions prior to 3.8.13-1.1 Description An issue was identified in the gnutls package that has been addressed in a security update. Recommendations Update to version 3.8.13-1.1...

PT-2026-37378

Name of the Vulnerable Software and Affected Versions gnutls versions prior to 3.8.13-1.1 Description A flaw exists where permitted name constraints are incorrectly ignored when previous Certificate Authorities CAs only have excluded name constraints. A remote attacker can exploit this to bypass...

PT-2026-37433

Name of the Vulnerable Software and Affected Versions gnutls versions prior to 3.8.13-1.1 Description No detailed information was provided regarding the nature of the security issues fixed in this package. Recommendations Update to version 3.8.13-1.1...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the gnutlspkcs11tokensetpin function. An attacker can execute arbitrary code or cause a denial of service by triggering a use-after-free condition. Remediation A fix was pushed into the master branch but not yet...

Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities

Summary Multiple components with known vulnerabilities were addressed in IBM QRadar SIEM 7.5.0 UP15 IF02 Vulnerability Details CVEID:CVE-2025-14831 DESCRIPTION: A flaw was found in GnuTLS. This vulnerability allows a denial of service DoS by excessive CPU Central Processing Unit and memory...

Security Bulletin: Muliple security vulnerabilities found in IBM CICS TX Standard.

Summary Multiple security vulnerabilities found in IBM CICS TX Standard. An update to IBM CICS TX Standard has been released to address multiple vulnerabilities in brotli, gnutls, libssh, openssl, curl, binutils, gnupg2, glib2 packages. Vulnerability Details CVEID:CVE-2025-9230 DESCRIPTION: Issue...

PT-2026-37380

Name of the Vulnerable Software and Affected Versions gnutls versions prior to 3.8.13-1.1 Description No detailed information was provided regarding the nature of the security issues fixed in this package. Recommendations Update to version 3.8.13-1.1...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: ngtcp2: ngtcp2-1.22.1-1.hum1 aarch64, x8664 ngtcp2-crypto-gnutls-1.22.1-1.hum1 aarch64, x8664 ngtcp2-crypto-gnutls-devel-1.22.1-1.hum1 aarch64, x8664 ngtcp2-crypto-ossl-1.22.1-1.hum1 aarch64, x86...

curl: Heap-buffer-overflow in `Curl_ssl_push_certinfo_len()` — sole bounds check is `DEBUGASSERT`

Summary Curlsslpushcertinfolen in lib/vtls/vtls.c uses DEBUGASSERTcertnum numofcerts as its only bounds check before writing a heap pointer into ci-certinfocertnum. DEBUGASSERT is a no-op in every release/production build lib/curlsetup.h:1084. Any mismatch between the count passed to...

The vulnerability of the Transport Layer Security library GnuTLS, related to its algorithmic complexity, allows attackers to induce a service failure.

The vulnerability of the Transport Layer Security library GnuTLS is related to its algorithmic complexity. Exploiting this vulnerability could allow a malicious actor to cause service failures...

SUSE: Security Advisory (SUSE-SU-2026:20984-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

gnutls: gnutls: Remote Denial of Service via crafted ClientHello with invalid PSK binder

A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key PSK binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and...