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CVE-2026-34073

1.7 low SSVC exploitation: none Modified
NVD · CVE.org

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 1.7 · cryptography.ioNVD modified 2026-10-14 17:18

Affected (CPE criteria) 1

  • cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*

References 2