[pkg-vuln] CVE-2026-34073 in cryptography@46.0.5 #328

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kert · 2026-04-02T17:37:21Z

kert commented

2026-04-02 17:37:21 +00:00

Severity: LOW
Package: cryptography @ 46.0.5
Fixed in: 46.0.6

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 b

Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-34073

**Severity:** LOW **Package:** `cryptography` @ `46.0.5` **Fixed in:** `46.0.6` 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 b **Reference:** https://nvd.nist.gov/vuln/detail/CVE-2026-34073

kert added this to the P21: Package Supply Chain — inventory, mirrors, drift, vuln scanning milestone 2026-04-02 17:37:21 +00:00

kert added the quality ci labels 2026-04-02 17:37:21 +00:00

kert closed this issue

2026-04-10 00:57:09 +00:00

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Reference: homelab/stack#328