{“lastseen”:””,”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\u2019s permitted subtrees. This oversight enables an attacker who compromises a name-constrained sub-CA to impersonate domains beyond its intended scope.”,”published”:”2026-06-11T14:30:30.800Z”,”modified”:”2026-06-11T15:39:31.210Z”,”type”:”cve”,”title”:”CVE-2026-9648″,”source”:”certcc”,”references”:”https:\/\/github.com\/kazu-yamamoto\/crypton-certificate\/pull\/30\\nhttps:\/\/github.com\/kazu-yamamoto\/crypton-certificate\/pull\/30\/changes\/f4b77edf6ead77f4a886da40e41eab20f0180e39\\nhttps:\/\/hackage.haskell.org\/package\/crypton-x509-validation-1.9.1\/revisions\/\\nhttps:\/\/github.com\/haskell\/security-advisories\/pull\/332″,”id”:”CVE-2026-9648″,”bulletinFamily”:””,”cwe”:null,”cvelist”:null,”sourceData”:”Haskell Programming Language crypton-certificate 0″,”sourceHref”:””,”cvss”:{“score”:9.1,”severity”:”CRITICAL”,”vector”:”CVSS:3.1\/AV:N\/AC:L\/PR:N\/UI:N\/S:U\/C:H\/I:H\/A:N”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”crypton-certificate”,”version”:”0″,”vendor”:”Haskell Programming Language”,”ai_description”:”The crypton-x509-validation library fails to enforce X.509 NameConstraints, allowing an attacker to impersonate domains beyond the intended scope.”,”ai_severity”:”Critical”,”ai_vendor”:”Haskell Programming Language”,”ai_product”:”crypton-certificate”,”ai_version”:”0″,”ai_score”:9.1}<\/p>\n","protected":false},"excerpt":{"rendered":"
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