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// vulnerability record
cached · NVD via COSMOS syncCVE-2026-54431
MEDIUMpublished 2026-07-02 11:16 UTC · 2 days ago · modified 2026-07-02 17:43 UTC
5.1
CVSS / 10
// description
In liboauth2 the Demonstrating Proof-of-Possession (DPoP) verifier accepts a proof whose JSON Web Key (jwk) header contains private key material. RFC 9449 section 4.3 step 7 requires the verifier to reject such a proof but oauth2_token_verify() function returns success for a malformed DPoP proof that embeds the private Elliptic Curve (EC) key in the header. This issue was fixed in version 2.3.0
// weaknesses (CWE)
- CWE-358