CVE-2026-42790

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...

CVE-2026-5263

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...

CVE-2026-42789

A flaw was found in Erlang OTP's publickey module. This vulnerability CWE-295, related to improper certificate validation, allows a non-Certificate Authority CA certificate to be accepted as an intermediate issuer. A remote attacker, holding an end-entity certificate issued by a trusted CA, can...

CVE-2026-5501 Improper Certificate Signature Verification in X.509 Chain Validation Allows Forged Leaf Certificates

wolfSSLX509verifycert in the OpenSSL compatibility layer accepts a certificate chain in which the leaf's signature is not checked, if the attacker supplies an untrusted intermediate with Basic Constraints CA:FALSE that is legitimately signed by a trusted root. An attacker who obtains any leaf...

CVE-2026-5501 Improper Certificate Signature Verification in X.509 Chain Validation Allows Forged Leaf Certificates

wolfSSLX509verifycert in the OpenSSL compatibility layer accepts a certificate chain in which the leaf's signature is not checked, if the attacker supplies an untrusted intermediate with Basic Constraints CA:FALSE that is legitimately signed by a trusted root. An attacker who obtains any leaf...

wolfSSL（CyaSSL） 安全漏洞

wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the American company wolfSSL, aimed at developers working with embedded systems. wolfSSL CyaSSL contains security vulnerabilities; these vulnerabilities stem from the parsing of URI names during certificate chain...

Linux Distros Unpatched Vulnerability : CVE-2026-33896

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Forge also called node-forge is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, pki.verifyCertificateChain does not...

CVE-2026-33896 Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)

Forge also called node-forge is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, pki.verifyCertificateChain does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the basicConstraints and keyUsage extensions...

CVE-2026-33896

Technical details are not publicly available in the provided documents; no affected products, versions, or remediation are specified. Monitor for updates to confirm scope and fixes.

CVE-2026-33896 Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)

Forge also called node-forge is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, pki.verifyCertificateChain does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the basicConstraints and keyUsage extensions...

CVE-2026-33896 Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)

Forge also called node-forge is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, pki.verifyCertificateChain does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the basicConstraints and keyUsage extensions...

Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)

Summary pki.verifyCertificateChain does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the basicConstraints and keyUsage extensions. This allows any leaf certificate without these extensions to act as a CA and sign other certificates, which node-for...

CLEANSTART-2026-VZ85637 excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate

Multiple security vulnerabilities affect the helm-fips package. An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. See references for individual vulnerability details...

CLEANSTART-2026-FP29743 excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate

Multiple security vulnerabilities affect the elastic-beats-fips package. An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. See references for individual vulnerability details...

CLEANSTART-2026-DI05920 excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate

Multiple security vulnerabilities affect the velero-fips package. An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. See references for individual vulnerability details...

Amazon Linux 2023 : docker (ALAS2023-2025-1329)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1329 advisory. crypto/x509: excluded subdomain constraint does not restrict wildcard SANs An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate...

Medium: docker

Issue Overview: crypto/x509: excluded subdomain constraint does not restrict wildcard SANs An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not...

Medium: runc

Issue Overview: crypto/x509: excluded subdomain constraint does not restrict wildcard SANs An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not...

OESA-2025-2866 golang security update

. Security Fixes: crypto/x509: Exclude subdomain constraints do not restrict wildcard SANs Exclude subdomain constraints in certificate chains do not restrict the use of wildcard SANs in leaf certificates. For example, excluding the constraint on the subdomain test.example.com does not prevent th...

OESA-2025-2864 golang security update

. Security Fixes: crypto/x509: Exclude subdomain constraints do not restrict wildcard SANs Exclude subdomain constraints in certificate chains do not restrict the use of wildcard SANs in leaf certificates. For example, excluding the constraint on the subdomain test.example.com does not prevent th...