Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature when extracting Keycloak realm and client roles due to missing verification of access token signatures, issuers, audiences, or expiry. An attacker can gain unauthorized privileges by...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error in the OIDC callback handling. An attacker can gain unauthorized access by substituting an access token minted for another client, thereby creating authenticated sessions without proper issuer, audience, nonce, o...

CVE-2026-82462

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

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...

CVE-2026-82462

pac4j-oidc versions prior to 6.5.6 contain an authentication bypass vulnerability in the OIDC callback handling. The OidcCredentialsExtractor accepts callbacks carrying only an access token without requiring an authorization code or ID token, allowing attackers to substitute access tokens minted ...

CVE-2026-82462 pac4j-oidc before 6.5.6 Authentication Bypass via Access Token Substitution

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

CVE-2026-82462

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

CVE-2026-82462 pac4j-oidc before 6.5.6 Authentication Bypass via Access Token Substitution

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

CVE-2026-82462 pac4j-oidc before 6.5.6 Authentication Bypass via Access Token Substitution

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

EUVD-2026-68119

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

CVE-2026-82461 pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token

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...

CVE-2026-82461 pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token

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...

CVE-2026-82461 pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token

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...

EUVD-2026-68118

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...

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...

CVE-2026-82461

pac4j-oidc versions before 6.5.6 fail to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client roles via the KeycloakRolesAuthorizationGenerator component. Attackers with low privileges can forge access tokens containing administrative roles paire...

CVE-2026-82461: Improper Verification of Cryptographic Signature

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...

CVE-2026-82462: Insufficient Verification of Data Authenticity

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...

PT-2026-83441

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...

PT-2026-83442

pac4j-oidc before 6.5.6 accepts OIDC callbacks carrying only an access token without authorization code or ID token validation. Attackers can substitute access tokens minted for other clients to create authenticated sessions without proper issuer, audience, nonce, or subject verification...