crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

Network Impact of Post-Quantum Certificate Chain Sizes on Time to First Byte in TLS Deployments

Post-Quantum Cryptography PQC is a rapidly growing deployment challenge as cryptographically relevant quantum computers CRQC continue to advance, leaving traditional cryptographic algorithms used in X.509 vulnerable to attack. However, PQC introduces significant deployment challenges in real-worl...

crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

UBUNTU-CVE-2026-35331

Accepting Certificates Violating Name Constraints...

CVE-2026-22747 Unauthorized User Impersonation when Using X.509 Client Certificates

Vulnerability in Spring Spring Security. SubjectX500PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user...

CVE-2026-22747

Summary : CVE-2026-22747 affects Spring Security 7.0.0–7.0.4. The issue is in SubjectX500PrincipalExtractor’s handling of certain malformed X.509 certificate CN values, which can cause the system to read the wrong username value and potentially allow attacker impersonation of another user. The co...

CLEANSTART-2026-BB70412 During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions

Multiple security vulnerabilities affect the percona-xtradb-cluster-operator-fips package. During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions. See references for individual vulnerability...

CLEANSTART-2026-SV08737 During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions

Multiple security vulnerabilities affect the gitness package. During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions. See references for individual vulnerability details...

kernel security update

6.12.0-124.52.1 - Add new Oracle Linux Driver Signing key 1 certificate Orabug: 37985782 - Disable UKI signing Orabug: 36571828 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list...

OpenBao's Certificate Authentication Allows Token Renewal With Different Certificate

Background OpenBao's Certificate authentication method, when a token renewal is requested and disablebinding=true is set, attempts to verify the current request's presented mTLS certificate matches the original. Token renewals for other authentication methods do not require any supplied login...

CVE-2026-39388 OpenBao's Certificate Authentication Allows Token Renewal With Different Certificate

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, OpenBao's Certificate authentication method, when a token renewal is requested and disablebinding=true is set, attempts to verify the current request's presented mTLS certificate matches the original. Toke...

kernel security update

4.18.0-553.120.1 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and...

OPENSUSE-SU-2026:20566-1 Security update for Botan

This update for Botan fixes the following issue: - CVE-2026-32884: Certificate validation bypass due to mixed-case Common Name in X.509 certificates bsc1261993...

Unauthorized User Impersonation when Using X.509 Client Certificates

SubjectX500PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user...

kernel security update

5.14.0-611.49.1 - Disable UKI signing Orabug: 36571828 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug:...

April 19, 2026—KB5091572 (OS Build 14393.9062) Out-of-band

None None...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : NetworkManager (SUSE-SU-2026:1443-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1443-1 advisory. This update for NetworkManager fixes the following issue: Security fixes: - CVE-2025-9615: Fixed non-admi...

EUVD-2026-23476

Anviz CX7 Firmware is vulnerable because the application embeds reusable certificate/key material, enabling decryption of MQTT traffic and potential interaction with device messaging channels at scale...

[slackware-security] cups

New cups packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/cups-2.4.17-i586-1slack15.0.txz: Upgraded. This update fixes security issues: The scheduler treated local user and group names as...