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OpenIDC liboauth2 vulnerabilities

2 published CVES affecting OpenIDC liboauth2, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

Total
2
Critical
0
High
0
Medium
2
Low
0
Unscored
0
CISA KEV
0

Latest OpenIDC liboauth2 CVEs

Newest publication first

  1. CVE-2026-54431 Improper Data Validation in liboauth2

    Published
    MediumCVSS 5.1 EPSS 0.18%

    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 malf...

  2. CVE-2026-54430 Server-Site Request Forgery in liboauth2

    Published
    MediumCVSS 5.1 EPSS 0.17%

    liboauth2 is vulnerable to Server-Side Request Forgery in oauth2_jose_jwks_aws_alb_resolve() function. The AWS ALB verifier reads both signer and kid from the unverified JWT header. If signer matches the configured ARN, kid is appended to alb_base_url without URL encoding or path...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.