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...

[SECURITY] Fedora 44 Update: opam-2.5.2-1.fc44

Opam is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow...

[SECURITY] Fedora 43 Update: opam-2.5.2-1.fc43

Opam is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow...

SUSE-SU-2026:3112-1 Security update for tomcat10

This update for tomcat10 fixes the following issues Update to Tomcat 10.1.56. Security issues fixed: - CVE-2026-50229: improper neutralization of script-related HTML tags in the number guess example bsc1269791. - CVE-2026-53404: always-incorrect control flow implementation in the rewrite valve...

crypto/x509: Incorrect enforcement of email constraints in crypto/x509

A certificate validation flaw has been discovered in the golang crypto/x509 module. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions

A flaw was found in golang.org/x/crypto/ssh/agent. When a key was added to a remote agent, security restrictions, known as constraint extensions, were not properly processed during the request. This allowed these restrictions to be silently removed when keys were forwarded, leading to the...

erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing

A flaw was found in Erlang OTP publickey. This improper certificate validation vulnerability allows a subordinate Certificate Authority CA with restricted DNS nameConstraints to bypass these restrictions. By issuing a leaf certificate that lacks a Subject Alternative Name SAN but contains a craft...

Important: Red Hat Security Advisory: Red Hat OpenStack Services on OpenShift 18.0 (golang-github-openstack-k8s-operators-os-diff) security update

An update for golang-github-openstack-k8s-operators-os-diff is now available for Red Hat OpenStack Services on OpenShift 18.0 Antelope. 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...

crypto/x509: Incorrect enforcement of email constraints in crypto/x509

A certificate validation flaw has been discovered in the golang crypto/x509 module. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly...

SUSE SLES12: gnutls / libgnutls-devel / libgnutls-openssl-devel / etc (SUSE-SU-2026:2924-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2924-1 advisory. This update for gnutls fixes the following issues - CVE-2026-3833: incorrectly accepted domain names due to comparison during name constraints...

JLSEC-2026-755 X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name

X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted...

JLSEC-2026-758 iPAddress name constraints bypass when `WOLFSSL_IP_ALT_NAME` is not defined

iPAddress name constraints bypass when WOLFSSLIPALTNAME is not defined. IP address name constraints are not enforced in that configuration, allowing a certificate to bypass an issuing CA's IP address constraints...

JLSEC-2026-717

URI nameConstraints from constrained intermediate CAs are parsed but not enforced during certificate chain verification in wolfcrypt/src/asn.c. A compromised or malicious sub-CA could issue leaf certificates with URI SAN entries that violate the nameConstraints of the issuing CA, and wolfSSL woul...

JLSEC-2026-696 Certificates with wildcard DNS SANs (e.g

Certificates with wildcard DNS SANs e.g. .example.com bypassed CA name-constraint checks. A certificate with a wildcard DNS SAN that should be rejected by the issuing CA's permitted/excluded DNS name constraints could be accepted...

tomcat: Apache Tomcat: Improper Authorization Allows Security Constraint Bypass

A flaw was found in Apache Tomcat where access control rules for the default servlet are improperly handled. An attacker can exploit this issue to bypass specific HTTP method restrictions, potentially gaining unauthorized access to protected application resources...

tomcat-coyote: tomcat: Improper Authorization allows security bypass

In Apache Tomcat, when multiple security constraints defined an HTTP method constraint for the same extension pattern, only the first method constraint was applied. A remote attacker could exploit this to bypass intended security restrictions for information or actions within the application...

MiracleLinux 9 : gnutls-3.8.10-4.el9_8 (AXSA:2026-1260:18)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1260:18 advisory. gnutls: Fix qsort comparator in DTLS reassembly CVE-2026-42009 gnutls: Fix crashing on an underflow with a DTLS datagram CVE-2026-33845 gnutls: Fix...

SUSE-SU-2026:2923-1 Security update for gnutls

This update for gnutls fixes the following issues - CVE-2026-3833: incorrectly accepted domain names due to comparison during name constraints processing being case-sensitive bsc1263707. - CVE-2026-5260: heap overread when processing extremely short premaster secret as part of an RSA key exchange...

PYSEC-2026-2686 OpenStack Nova: Nova scheduler hint injection bypasses Placement resource claims and scheduling constraints

Affects - Nova: =18.0.0 =32.0.0 =33.0.0 33.0.2 Description Erichen from the Institute of Computing Technology, Chinese Academy of Sciences reported that Nova's server create API does not strip internal scheduler hints. An authenticated user can bypass Placement resource claims and scheduling...

tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve

A flaw was found in Apache Tomcat. This vulnerability, located in the rewrite valve, is due to improper handling of URL encoding hex encoding. A remote attacker could exploit this to bypass security constraints in certain configurations, potentially gaining unauthorized access or performing actio...