CVE-2026-9648

9.1 Critique

Publiée le 11/06/2026 à 18:16 · Modifiée le 17/06/2026 à 13:05 · Analyse NVD reportée · Source : cret@cert.org

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.

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Produits concernés

Haskell Programming Language crypton-certificate

Scores CVSS

Version	Score	Source	Vecteur
3.1	9.1 Critique	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`

Références

https://github.com/haskell/security-advisories/pull/332
https://github.com/kazu-yamamoto/crypton-certificate/pull/30
https://github.com/kazu-yamamoto/crypton-certificate/pull/30/changes/f4b77edf6ead77f4a886da40e41eab20f0180e39
https://hackage.haskell.org/package/crypton-x509-validation-1.9.1/revisions/
https://www.kb.cert.org/vuls/id/862559

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories