certificate verification

  1. Go 1.26 CVE-2026-27138 X509 Verification Panic Fixed in 1.26.1

    A new security advisory affecting the Go standard library's crypto/x509 package — tracked as CVE-2026-27138 — warns that certificate chain verification can panic when an intermediate or leaf certificate contains an empty DNS name while another certificate in the same chain includes excluded name...
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    • certificate verification go security panic vulnerability x509 certificates
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    • Forum: Security Alerts

  2. Go X.509 Email Name Constraints Bug CVE-2026-27137 Fixed in Go 1.26.1

    A subtle correctness bug in Go’s X.509 verification code — tracked as CVE-2026-27137 — can cause certificate chains to ignore multiple email-address name constraints when those constraints share the same local-part but differ by domain. The practical upshot: under specific conditions a...
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    • certificate verification golang security name constraints x509
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    • Forum: Security Alerts