HIGHVulnerability
CVE-2026-82461
pac4j-oidc before 6.5.6 fails to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client roles. Attackers can forge access tokens with administrative roles paired with valid ID tokens to bypass authorization checks in applications relying on pac4j role validation.
Properties
- severity
- HIGH
- score
- 8.1
- epss_score
- 0.00186
- cve_id
- CVE-2026-82461
- signal_observed_at
- 2026-09-15T21:12:48+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- published_at
- 2026-08-29T17:17:58.207
- last_modified
- 2026-09-10T19:54:25.810
- epss_percentile
- 0.08436
Related Entities (3)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Improper Verification of Cryptographic Signature
DESCRIBED_BY (1)
→[Source]NVD
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