EUVD-2026-41277

ID: EUVD-2026-41277

Severity: medium

CVSS v4: 5.1 (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)

CVSS v3: Not provided

CWE: None listed

Source: ENISA

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

Timestamps

Normalized: 2026-07-02T12:07:51Z UTC
Last updated: 2026-07-02T12:07:51Z UTC

References

No references provided.

VulnAI

EUVD-2026-41277

Description

Timestamps

References