CVE-2026-85394 - python-jose through 3.5.0 Algorithm Confusion via DER-encoded Public Key as HMAC Secret
Brief
CVE ID : CVE-2026-85394
Published : Sept. 3, 2026, 7:17 p. m.
- 1 hour, 23 minutes ago
Description : python-jose through 3.
- 0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricted. This is an incomplete fix for CVE-2024-33663.
Severity: 9.3
- CRITICAL
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