CVE Intelligence

Mpdavis Python-jose vulnerabilities

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Published CVEs affecting Mpdavis Python-jose: 1 record(s), with affected versions and fixes.

CVE-2026-85394 Critical · 9.1 CWE-347 Sep 3, 2026
python-jose through 3.5.0 Algorithm Confusion via DER-encoded Public Key as HMAC Secret
python-jose through 3.5.0 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.