GHSA-RX66-HJ7G-28H7 Keycloak: Replay of action tokens via improper handling of single-use entries

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This...

EUVD-2026-18213

A flaw was found in Keycloak. An authenticated user with the umaprotection role can bypass User-Managed Access UMA policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned...

ch.iterial.keycloak.plugins:keycloak-directus-plugin (>=0.1.0 <=0.7.0), com.charlyghislain.keycloak:keycloak-importexport (>=21.0.0 <=23.0.1) +160 more potentially affected by CVE-2026-4636 via org.keycloak:keycloak-services (>=1.0-alpha-1 <=26.5.6)

org.keycloak:keycloak-services MAVEN version =1.0-alpha-1, =0.1.0, =21.0.0, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.0.0, =1.2.0 and more Source cves: CVE-2026-4636 Source advisory: OSV:GHSA-F2HX-5FX3-HMCVhttps://vulners.com/osv/OSV:GHSA-F2HX-5FX3-...

ch.iterial.keycloak.plugins:keycloak-directus-plugin (>=0.1.0 <=0.7.0), com.charlyghislain.keycloak:keycloak-importexport (>=21.0.0 <=23.0.1) +160 more potentially affected by CVE-2026-4325 via org.keycloak:keycloak-services (>=1.0-alpha-1 <=26.5.6)

org.keycloak:keycloak-services MAVEN version =1.0-alpha-1, =0.1.0, =21.0.0, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.0.0, =1.2.0 and more Source cves: CVE-2026-4325 Source advisory: OSV:GHSA-RX66-HJ7G-28H7https://vulners.com/osv/OSV:GHSA-RX66-HJ7G-...

Excessive Platform Resource Consumption within a Loop

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Excessive Platform Resource Consumption within a Loop via the scope parameter processing in the OpenID Connec...

Improper Isolation or Compartmentalization

Overview Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization through improper handling of single-use entries in the SingleUseObjectProvider a global key-value store. An attacker can gain unauthorized access or compromise accounts by replaying consumed...

Keycloak: Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint

A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers URIs that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information...

Open Redirect

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Open Redirect via improper validation of redirect URIs in the authentication endpoint. An attacker can gain...

ch.iterial.keycloak.plugins:keycloak-directus-plugin (>=0.1.0 <=0.7.0), com.charlyghislain.keycloak:keycloak-importexport (>=21.0.0 <=23.0.1) +160 more potentially affected by CVE-2026-3872 via org.keycloak:keycloak-services (>=1.0-alpha-1 <=26.5.6)

org.keycloak:keycloak-services MAVEN version =1.0-alpha-1, =0.1.0, =21.0.0, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.4.10, =1.0.0, =1.2.0 and more Source cves: CVE-2026-3872 Source advisory: OSV:GHSA-CJM2-J6CM-6P6Mhttps://vulners.com/osv/OSV:GHSA-CJM2-J6CM-...

EUVD-2026-18206

A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers URIs that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information...

GHSA-CJM2-J6CM-6P6M Keycloak: Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint

A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers URIs that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.11 Images Update

New images are available for Red Hat build of Keycloak 26.4.11 and Red Hat build of Keycloak 26.4.11 Operator, running on OpenShift Container Platform Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Ha...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.2.15 Images Update

New images are available for Red Hat build of Keycloak 26.2.15 and Red Hat build of Keycloak 26.2.15 Operator, running on OpenShift Container Platform Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Ha...

org.keycloak.services.resources.account: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API

A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered...

keycloak: Keycloak: Replay of action tokens via improper handling of single-use entries

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This...

keycloak: org.keycloak/keycloak-services: Keycloak: Privilege escalation via manage-clients permission

A flaw was found in Keycloak. An administrator with manage-clients permission can exploit a misconfiguration where this permission is equivalent to manage-permissions. This allows the administrator to escalate privileges and gain control over roles, users, or other administrative functions within...

org.keycloak.protocol.oidc: Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjwt. The issue allows a client to specify an arbitrary jwksuri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the...

keycloak: Keycloak IDOR in realm client creating/deleting

A flaw was found in Keycloak. An IDOR Broken Access Control vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the resourceServer client ID provided in the A...

keycloak: Keycloak: Information Disclosure via improper role enforcement in UMA 2.0 Protection API

A flaw was found in Keycloak. The User-Managed Access UMA 2.0 Protection API endpoint for permission tickets fails to enforce the umaprotection role check. This allows any authenticated user with a token issued for a resource server client, even without the umaprotection role, to enumerate all...

keycloak: Keycloak: Denial of Service via excessive processing of OpenID Connect scope parameters

A flaw was found in Keycloak. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with an excessively long scope parameter to the OpenID Connect OIDC token endpoint. This leads to high resource consumption and prolonged processing times, ultimate...