The crypton-x509-validation Haskell library fails to enforce X.509 NameConstraints, allowing TLS clients to accept certificates whose Subject Alternative Names fall outside the issuing CA’s permitted subtrees. This oversight enables an attacker who compromises a name-constrained sub-CA to impersonate domains beyond its intended scope.
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Thu, 11 Jun 2026 16:30:00 +0000
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cvssV3_1
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Thu, 11 Jun 2026 15:30:00 +0000
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| Description | The crypton-x509-validation Haskell library fails to enforce X.509 NameConstraints, allowing TLS clients to accept certificates whose Subject Alternative Names fall outside the issuing CA’s permitted subtrees. This oversight enables an attacker who compromises a name-constrained sub-CA to impersonate domains beyond its intended scope. | |
| Title | CVE-2026-9648 | |
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Status: PUBLISHED
Assigner: certcc
Published: 2026-06-11T14:30:30.800Z
Updated: 2026-06-11T15:39:31.210Z
Reserved: 2026-05-26T19:26:04.460Z
Link: CVE-2026-9648
Updated: 2026-06-11T15:10:30.272Z
Status : Received
Published: 2026-06-11T16:16:25.503
Modified: 2026-06-11T17:16:36.177
Link: CVE-2026-9648
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