CVE-2026-7307 Keycloak: keycloak: denial of service via specially crafted saml input

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language SAML endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service DoS where the server becomes...

CVE-2026-7307

Keycloak contains a denial-of-service issue (CVE-2026-7307) where a remote, unauthenticated attacker can send a specially crafted XML input to the SAML endpoint. The crafted input triggers high CPU usage and worker-thread starvation, rendering the server unavailable. The description does not prov...

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 through the areWildcardsAllowed check in RedirectUtils. An attacker can bypass redirect URI...

User Impersonation

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 User Impersonation through the SessionCodeChecks logic in SessionCodeChecks.java. An attacker can reuse an...

External Control of Assumed-Immutable Web Parameter

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 External Control of Assumed-Immutable Web Parameter via the SessionCodeChecks restart flow in the login sessi...

CVE-2026-7307

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language SAML endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service DoS where the server becomes...

CVE-2026-37978

A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID userId parameter. This vulnerability allows for cross-role personally identifiable information PII leakage,...

Authorization Bypass Through User-Controlled Key

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 Authorization Bypass Through User-Controlled Key via the generateAccessToken path in...

Improper Validation of Syntactic Correctness of Input

Overview org.keycloak:keycloak-saml-core is an Identity and Access Management plugin for Keycloak. Affected versions of this package are vulnerable to Improper Validation of Syntactic Correctness of Input in the SAMLParser and SAML11ParserUtil code paths that handle SAML 1.1 assertions and protoc...

CVE-2026-37981

Keycloak CVE-2026-37981 describes a broken access control in the Account Resources user lookup endpoint, where a remote authenticated user owning at least one UMA resource can enumerate and harvest PII for all realm users by sending crafted requests with arbitrary usernames or emails. The endpoin...

CVE-2026-37981 Keycloak: org.keycloak.authorization: keycloak: information disclosure via broken access control in user lookup endpoint

A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access UMA resource, to enumerate and harvest personally identifiable information PII for all realm users. By...

CVE-2026-37981

A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access UMA resource, to enumerate and harvest personally identifiable information PII for all realm users. By...

EUVD-2026-30881

A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access UMA resource, to enumerate and harvest personally identifiable information PII for all realm users. By...

CVE-2026-37981 Keycloak: org.keycloak.authorization: keycloak: information disclosure via broken access control in user lookup endpoint

A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access UMA resource, to enumerate and harvest personally identifiable information PII for all realm users. By...

CVE-2026-37981

A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access UMA resource, to enumerate and harvest personally identifiable information PII for all realm users. By...

CVE-2026-4630

A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference IDOR vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier UUID belonging to another Resource Server within the same realm,...

CVE-2026-4630 Keycloak: keycloak: unauthorized resource access and data modification via insecure direct object reference

A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference IDOR vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier UUID belonging to another Resource Server within the same realm,...

CVE-2026-4630

CVE-2026-4630 (Keycloak) describes an Insecure Direct Object Reference (IDOR) in the Authorization Services Protection API endpoint. An authenticated client can use a resource UUID from another Resource Server in the same realm to bypass authorization checks, enabling unauthorized GET, PUT, and D...

EUVD-2026-30879

A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference IDOR vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier UUID belonging to another Resource Server within the same realm,...

CVE-2026-4630 Keycloak: keycloak: unauthorized resource access and data modification via insecure direct object reference

A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference IDOR vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier UUID belonging to another Resource Server within the same realm,...