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-2026-55152

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,...

Keycloak 缓冲区错误漏洞

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has a buffer error vulnerability, which originates from the ClientRegistrationAuth component. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST...

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Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-32h4-44jj-c5vx.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...

Keycloak 安全漏洞

Keycloak is an open-source identity and access management solution developed by Keycloak. There is a security vulnerability in Keycloak. This vulnerability arises when user accounts are temporarily locked due to failed login attempts. Attackers with valid client credentials can exploit the revers...

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...

Keycloak 代码问题漏洞

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has code-related vulnerabilities. These vulnerabilities arise when the revokeRefreshToken=true setting is enabled, and persistent session storage is used. A server restart can reset the internal...

Keycloak 安全漏洞

Keycloak is an open-source identity and access management solution developed by Keycloak. There is a security vulnerability in Keycloak. This vulnerability stems from administrators with limited client management privileges being able to exploit the loophole in the fine-grained administrator...

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...

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-2026-9801: Improper Validation of Specified Quantity in Input

A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol LDAP server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a malformed LDAP password...

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,...

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-2026-9793: 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-2026-9802: 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...

CVE-2026-9798: Authentication Bypass by Primary Weakness

A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication CIBA flow to bypass this...