crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

Exploit for Improper Access Control in Fortinet Forticlientems

CVE-2026-35616 Author: wa6n3r | GitHubhttps://github...

CVE-2026-31430

A flaw was found in the Linux kernel. An unprivileged user can exploit this vulnerability by submitting a specially crafted X.509 certificate to the kernel through the keyrings7 application programming interface API. This certificate, specifically when containing empty Basic Constraints or Key...

OPENSUSE-SU-2026:20571-1 Security update for go1.26

This update for go1.26 fixes the following issues: - Update to version go1.26.2 bsc1255111. - CVE-2026-27140: cmd/go: trust layer bypass when using cgo and SWIG bsc1261653. - CVE-2026-27143: cmd/compile: possible memory corruption after bound check elimination bsc1261654. - CVE-2026-27144:...

EUVD-2026-23819

In the Linux kernel, the following vulnerability has been resolved: X.509: Fix out-of-bounds access when parsing extensions Leo reports an out-of-bounds access when parsing a certificate with empty Basic Constraints or Key Usage extension because the first byte of the extension is read before...

CERTFR-2026-ACT-018

creationtimestamp| type| source ---|---|--- 2026-04-20 12:26:09+00:00| seen| https://bsky.app/profile/cert-fr.bsky.social/post/3mjwhnnjfjr2y 2026-04-20 13:39:09+00:00| seen| https://bsky.app/profile/infosecfr.skyfleet.blue/post/3mjwlq7lk6a2i...

Security update for opensc

This update for opensc fixes the following issues: CVE-2025-49010: specially crafted smart card or USB device can lead to a stack buffer overflow write in GET RESPONSE bsc1261214. CVE-2025-66037: specially crafted input processed by the fuzzpkcs15reader harness can lead to an out-of-bounds heap...

CVE-2026-31430 X.509: Fix out-of-bounds access when parsing extensions

In the Linux kernel, the following vulnerability has been resolved: X.509: Fix out-of-bounds access when parsing extensions Leo reports an out-of-bounds access when parsing a certificate with empty Basic Constraints or Key Usage extension because the first byte of the extension is read before...

CVE-2026-31430

In the Linux kernel, the following vulnerability has been resolved: X.509: Fix out-of-bounds access when parsing extensions Leo reports an out-of-bounds access when parsing a certificate with empty Basic Constraints or Key Usage extension because the first byte of the extension is read before...

CVE-2026-31430

CVE-2026-31430 affects the Linux kernel: X.509 extensions parsing could read the first byte of an extension before checking length, causing out-of-bounds access. The vulnerability can be triggered by an unprivileged user submitting a crafted certificate via the keyrings(7) API. A PoC exists. The ...

CVE-2026-31430

In the Linux kernel, the following vulnerability has been resolved: X.509: Fix out-of-bounds access when parsing extensions Leo reports an out-of-bounds access when parsing a certificate with empty Basic Constraints or Key Usage extension because the first byte of the extension is read before...

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...

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...

PT-2026-33881

Name of the Vulnerable Software and Affected Versions OpenBao versions prior to 2.5.3 Description The Certificate authentication method contains a flaw during token renewal when disable binding=true is configured. The system incorrectly verifies if the mTLS certificate presented during a renewal...

ROS-20260420-73-0042

Vulnerability in incus related to errors in certificate authentication procedure. The vulnerability can be exploited remotely...

ROS-20260420-73-0016

A vulnerability in the maxcertlist parameter of certificate compression in TLS 1.3 of the OpenSSL library is related to uncontrolled memory allocation. Exploitation of the vulnerability could allow an attacker acting remotely to cause a denial of service...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from reading data without checking its length when parsing X.509 certificates. This can lead to out-of-bound...

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...

RHEL 9 : skopeo (RHSA-2026:9098)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:9098 advisory. The skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and...