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Vulnerabilities of Go standard library crypto/x509

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CVE Summary Score Published
CVE-2026-111943 On most platforms, Go uses the given system root certificates 6.8 Medium Oct 21, 2026
CVE-2026-27145 (*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name… 6.5 Medium Jun 2, 2026
CVE-2026-32280 During chain building, the amount of work that is done is not correctly limited when a large number of intermediate… 7.5 High Apr 8, 2026
CVE-2026-32281 Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a… 7.5 High Apr 8, 2026
CVE-2026-33810 When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to… 7.5 High Apr 8, 2026
CVE-2026-27138 Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in… 5.9 Medium Mar 6, 2026
CVE-2026-27137 When verifying a certificate chain which contains a certificate containing multiple email address constraints which… 7.5 High Mar 6, 2026
CVE-2025-61727 An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf… 6.5 Medium Dec 3, 2025
CVE-2025-61729 Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be… 7.5 High Dec 2, 2025
CVE-2025-58188 Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that… 7.5 High Oct 29, 2025
CVE-2025-58187 Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly… 7.5 High Oct 29, 2025
CVE-2025-22874 Calling Verify with a VerifyOptions.KeyUsages that contains ExtKeyUsageAny unintentionally disabledpolicy validation 7.5 High Jun 11, 2025
CVE-2025-22865 Using ParsePKCS1PrivateKey to parse a RSA key that is missing the CRT values would panic when verifying that the key… 7.5 High Jan 28, 2025
CVE-2024-45341 A certificate with a URI which has a IPv6 address with a zone ID may incorrectly satisfy a URI name constraint that… 6.1 Medium Jan 28, 2025
CVE-2024-24783 Verifying a certificate chain which contains a certificate with an unknown public key algorithm will cause… 5.9 Medium Mar 5, 2024

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