PT-2026-44186

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the Fine-Grained Admin Permissions FGAPv2 feature. An administrator with limited client management permissions can assign any realm role, including highly privileged ones, t...

CVE-2026-9793: Improper Verification of Cryptographic Signature

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...

CVE-2026-9796: Time-of-check Time-of-use (TOCTOU) Race Condition

A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use TOCTOU vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm,...

PT-2026-55161

A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been...

PT-2026-44196

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw in the ClientRegistrationAuth component allows a remote unauthenticated attacker to cause a Denial of Service DoS. By sending a specially crafted POST request with a malformed...

CVE-2026-9803: Out-of-bounds Read

A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an...

CVE-2026-9795: Incorrect Privilege Assignment

A flaw was found in Keycloak's Fine-Grained Admin Permissions FGAPv2 feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security...

CVE-2026-9792: Improper Handling of Insufficient Permissions or Privileges

A flaw was found in Keycloak's Client Policies, specifically within the org.keycloak.protocol.oidc component. When certain condition providers client-type, client-roles, client-attributes, client-scopes are used to enforce security restrictions, the reject-ropc-grant executor is silently bypassed...

PT-2026-55148

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...

CVE-2026-9794: Generation of Error Message Containing Sensitive Information

A flaw was found in Keycloak. A remote, unauthenticated attacker can exploit this vulnerability by sending specially crafted SOAP requests to the SAML ECP Security Assertion Markup Language Enhanced Client or Proxy endpoint with varying client IDs. By observing distinct faultstrings in the...

CVE-2026-9802: Insufficient Session Expiration

A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been...

PT-2026-55117

A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an...

PT-2026-44184

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists where Keycloak may incorrectly process unsigned claims when a JSON Web Encryption JWE encrypted request object is submitted, provided the decrypted content is raw JSON. This...

PT-2026-55109

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-32h4-44jj-c5vx. This link is maintained to preserve external references. Original Description A flaw was found in Keycloak's Fine-Grained Admin Permissions FGAPv2 feature. An administrator with limited client...

PT-2026-44185

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A remote, unauthenticated attacker can cause information disclosure by sending specially crafted SOAP requests to the SAML ECP Security Assertion Markup Language Enhanced Client or Proxy...

PT-2026-44183

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the org.keycloak.protocol.oidc component of Keycloak's Client Policies. When specific condition providers—client-type, client-roles, client-attributes, or client-scopes—are...

PT-2026-55091

A flaw was found in Keycloak's Client Policies, specifically within the org.keycloak.protocol.oidc component. When certain condition providers client-type, client-roles, client-attributes, client-scopes are used to enforce security restrictions, the reject-ropc-grant executor is silently bypassed...

CVE-2026-9791: Incorrect Authorization

A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect OIDC token with the 'organization' scope. This allows organization metadata to be disclosed in...

io.kokuwa.keycloak:keycloak-event-metrics (0.2.1), org.keycloak:keycloak-crypto-fips1402 (21.1.0) +13 more potentially affected by CVE-2026-9704 via org.keycloak:keycloak-services (21.1.0)

org.keycloak:keycloak-services MAVEN version 21.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - io.kokuwa.keycloak:keycloak-event-metrics 0.2.1 - org.keycloak:keycloak-crypto-fips1402 21.1.0 -...

org.keycloak:keycloak-authz-policy-drools (6.0.0), org.keycloak:keycloak-dependencies-server-all (6.0.0) +8 more potentially affected by CVE-2026-9704 via org.keycloak:keycloak-services (6.0.0)

org.keycloak:keycloak-services MAVEN version 6.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on org.keycloak:keycloak-services and may be impacted: - org.keycloak:keycloak-authz-policy-drools 6.0.0 - org.keycloak:keycloak-dependencies-server-all 6.0...