crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

[SECURITY] [DSA 6281-1] gnutls28 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6281-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso May 19, 2026 https://www.debian.org/security/faq -...

Coder: Unauthenticated SSRF via Azure Instance Identity Endpoint

Summary Unauthenticated semi-blind Server-Side Request Forgery SSRF via the Azure instance identity endpoint POST /api/v2/workspaceagents/azure-instance-identity. An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a...

GHSA-686C-7VGV-V3FX Coder: Unauthenticated SSRF via Azure Instance Identity Endpoint

Summary Unauthenticated semi-blind Server-Side Request Forgery SSRF via the Azure instance identity endpoint POST /api/v2/workspaceagents/azure-instance-identity. An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a...

CVE-2026-42327

A flaw was found in rust-openssl, a library providing OpenSSL bindings for the Rust programming language. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate. This certificate, containing non-UTF-8 characters in its OCSP Online Certificate Status...

OpenSSH: OpenSSH: Security bypass via mishandling of authorized_keys principals option

A flaw was found in OpenSSH. This vulnerability arises from the incorrect handling of the authorizedkeys principals option in uncommon scenarios. Specifically, when a principals list is used with a Certificate Authority that includes comma characters, OpenSSH may misinterpret the input. This coul...

Important: Red Hat Security Advisory: golang security update

An update for golang is now available for Red Hat Enterprise Linux 9. 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, is available for each vulnerability from th...

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...

MAL-2026-4441 Malicious code in @shadanai/openclaw (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector c0e2f02ab1bb3d99de1787ed7d69f1df97bd3b2d7c18cc8ba4e5f8688f649ce9 On npm install, scripts/postinstall.mjs performs several installer-harm actions. 1 Backdoor: writes /.openclaw/openclaw.json configuring a local...

Malicious code in @shadanai/openclaw (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector c0e2f02ab1bb3d99de1787ed7d69f1df97bd3b2d7c18cc8ba4e5f8688f649ce9 On npm install, scripts/postinstall.mjs performs several installer-harm actions. 1 Backdoor: writes /.openclaw/openclaw.json configuring a local...

SUSE-SU-2026:21824-1 Security update for leancrypto

This update for leancrypto fixes the following issues Security issue: - CVE-2026-34610: The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when stori...

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...

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...

Important: Red Hat Security Advisory: git-lfs security update

An update for git-lfs is now available for Red Hat Enterprise Linux 10. 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, is available for each vulnerability from...

Important: Red Hat Security Advisory: golang-github-openprinting-ipp-usb security update

An update for golang-github-openprinting-ipp-usb is now available for Red Hat Enterprise Linux 10. 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, is available f...

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: 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 10. 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, is available for each...

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: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...