CVE-2026-57817

A flaw was found in Apache CXF. When operating in the OpenID Connect Hybrid Flow, Apache CXF does not enforce the validation of the chash parameter. This vulnerability allows a remote attacker, through a non-compliant or misconfigured Identity Provider IdP, to perform Authorization Code...

CVE-2026-19278

CVE-2026-19278 concerns StackRox/RHACS Central. The flaw lies in the Auth Machine-to-Machine (M2M) token exchange where, during M2M role mapping, unanchored regular expressions are used to match claim values. This allows an attacker with a valid OpenID Connect (OIDC) token whose claim value is a ...

PT-2026-69479

Name of the Vulnerable Software and Affected Versions StackRox/RHACS Central affected versions not specified Description A flaw exists in the Auth Machine-to-Machine M2M token exchange. The system employs unanchored regular expressions when matching claim values during the configuration of M2M ro...

CVE-2026-18353

A flaw was found in PIA. An unauthenticated attacker can exploit a Server-Side Request Forgery SSRF vulnerability by crafting a malicious OpenID Connect OIDC issuer URL. This bypasses an internal allowlist due to inconsistent URL parsing between Python's urlparse and the requests/urllib3 librarie...

CVE-2026-63687

Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT e.g., one whose clientsecret is known or compromised can thereby substitute th...

CVE-2026-63687

A security bypass vulnerability exists in Apache CXF within the cxf-rt-rs-security-oauth2 component. The JwtRequestCodeFilter fails to exclude security-sensitive parameters when copying claims from a signed request JWT into the authorization parameter map. An attacker who possesses or compromises...

CVE-2026-63687 Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parameters

Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT e.g., one whose clientsecret is known or compromised can thereby substitute th...

CVE-2026-63687

Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT e.g., one whose clientsecret is known or compromised can thereby substitute th...

CVE-2026-65583

The Apache CXF Runtime OpenID Connect library (org.apache.cxf:cxf-rt-rs-security-sso-oidc) contains an authentication bypass vulnerability due to insufficient validation of required claims in self-issued OIDC ID tokens. Specifically, the OIDC relying-party token validation may fail to enforce che...

EUVD-2026-53859

Apache CXF’s OIDC relying-party token validation could accept self-issued ID tokens without enforcing required claim checks issuer/subject/audience/time and subjwk binding, enabling authentication bypass with crafted tokens. However, note that self-issued ID tokens are not accepted by default in...

CVE-2026-57817

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the chash parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider IdP that omits the chash, the RP becomes vulnerable to Authorization Code...

CVE-2026-57817 Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the chash parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider IdP that omits the chash, the RP becomes vulnerable to Authorization Code...

CVE-2026-57817

A flaw in Apache CXF allows for Authorization Code Substitution/Injection attacks during the OpenID Connect Hybrid Flow. The vulnerability occurs because the cxf-rt-rs-security-sso-oidc library (and the broader cxf component) fails to enforce the validation of the c_hash parameter, as required by...

EUVD-2026-53855

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the chash parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider IdP that omits the chash, the RP becomes vulnerable to Authorization Code...

CVE-2026-57817 Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the chash parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider IdP that omits the chash, the RP becomes vulnerable to Authorization Code...

PT-2026-68474

Name of the Vulnerable Software and Affected Versions Apache CXF versions prior to 4.2.3 Apache CXF versions prior to 4.1.8 Apache CXF versions prior to 3.6.12 Description The JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding...

CVE-2026-63687: Insufficient Verification of Data Authenticity

Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT e.g., one whose clientsecret is known or compromised can thereby substitute th...

keycloak: org.keycloak.protocol.oidc: HTTP Parameter Pollution in OIDC redirect URI allows response parameter duplication - #GHI-604

A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers URIs, a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks...

keycloak: Keycloak: Security policy bypass in JWE-encrypted request object processing

A flaw was found in Keycloak. When a JSON Web Encryption JWE encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims, leadin...

keycloak: Keycloak: Security policy bypass in JWE-encrypted request object processing

A flaw was found in Keycloak. When a JSON Web Encryption JWE encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims, leadin...