crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application

A flaw was found in the crypto/x509 package within Go golang. When verifying a certificate chain, excluded DNS Domain Name System constraints are not correctly applied to wildcard DNS Subject Alternative Names SANs if the case of the SAN differs from the constraint. This oversight could allow an...

Important: Red Hat Security Advisory: opentelemetry-collector security update

An update for opentelemetry-collector is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, ...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: golang (UTSA-2026-016810)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016810 advisory. Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non- linearly with respect to the size of the certificate. This...

CVE-2026-42011

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities CAs only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate...

Security Bulletin: There is a vulnerability in cryptography-46.0.5-cp311-abi3-manylinux_2_34_x86_64.whl used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-34073)

Summary There is a vulnerability in cryptography-46.0.5-cp311-abi3-manylinux234x8664.whl used by IBM Maximo Manage application in IBM Maximo Application Suite. Vulnerability Details CVEID:CVE-2026-34073 DESCRIPTION: cryptography is a package designed to expose cryptographic primitives and recipes...

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...

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...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to Inefficient Algorithmic Complexity in crypto/x509 [CVE-2025-58187]

Summary IBM Watson Speech Services Cartridge is vulnerable to Inefficient Algorithmic Complexity in crypto/x509, due to non-linear processing time of some inputs scale with respect to the size of the certificate CVE-2025-58187. Crypto/x509 is used in our speech utilities. This vulnerabilitiy has...

CLEANSTART-2026-QZ16523 Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate

Multiple security vulnerabilities affect the modelmesh-runtime-adapter package. Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. See references for individual vulnerability details...

Linux Distros Unpatched Vulnerability : CVE-2026-32884

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certificate path using name constraints which restrict the set of...

CVE-2026-34073

A flaw was found in the cryptography library. This vulnerability occurs because DNS Domain Name System name constraints were not properly validated against the "peer name" during certificate validation, only against Subject Alternative Names SANs within child certificates. This oversight could...

PYSEC-2026-35

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography...

AZL-81180 CVE-2026-32884 affecting package botan2 2.14.0-2

Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certificate path using name constraints which restrict the set of allowable DNS names, if no subject alternative name is defined in the end-entity certificate Botan would check that the CN was allowed by t...

Fedora: Security Advisory (FEDORA-2026-6c010af7be)

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...

SUSE SLES15 Security Update : go1.26-openssl (SUSE-SU-2026:0993-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0993-1 advisory. Update to go 1.26.1 bsc1255111, jscSLE-18320: - CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. -...

Security update for go1.26-openssl

This update for go1.26-openssl fixes the following issues: Update to go 1.26.1 bsc1255111, jscSLE-18320: CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. CVE-2026-27137: crypto/x509: incorrect enforcement of email constraints bsc1259266. CVE-2026-27138: crypto/x509:...

SUSE-SU-2026:0993-1 Security update for go1.26-openssl

This update for go1.26-openssl fixes the following issues: Update to go 1.26.1 bsc1255111, jscSLE-18320: - CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. - CVE-2026-27137: crypto/x509: incorrect enforcement of email constraints bsc1259266. - CVE-2026-27138:...

SUSE-SU-2026:0976-1 Security update for go1.26-openssl

This update for go1.26-openssl fixes the following issues: Update to go 1.26.1 bsc1255111, jscSLE-18320: - CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. - CVE-2026-27137: crypto/x509: incorrect enforcement of email constraints bsc1259266. - CVE-2026-27138:...

EulerOS 2.0 SP10 : golang (EulerOS-SA-2026-1336)

According to the versions of the golang packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Within HostnameError.Error, when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the...

EulerOS 2.0 SP10 : golang (EulerOS-SA-2026-1310)

According to the versions of the golang packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Within HostnameError.Error, when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the...