PyPI/cryptography CVE-2026-34073: medium 5.3, EPSS 0.18%

cryptography has incomplete DNS name constraint enforcement on peer names

Action: Upgrade cryptography to 46.0.6 or later.

pip install cryptography==46.0.6

Affected

Fixed versions

Sources

• osv: GHSA-m959-cc7f-wv43
• https://github.com/pyca/cryptography/security/advisories/GHSA-m959-cc7f-wv43
• https://nvd.nist.gov/vuln/detail/CVE-2026-34073
• https://github.com/pyca/cryptography
• https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2026-35.yaml

CVE-2026-34073 · published 2026-03-27T19:56:21Z · modified 2026-09-10T03:51:00.592317622Z · JSON