CVE-2026-9704

A flaw was found in Keycloak. An authenticated user with low privileges can exploit this vulnerability by sending an oversized subjecttoken JSON Web Token JWT to the TokenEndpoint. When the token exceeds a 4000-character limit, it is silently dropped, causing the system to fall back to client...

CVE-2026-9704

Summary: CVE-2026-9704 affects Keycloak. An authenticated user with low privileges can trigger privilege escalation by sending an oversized subject_token JWT to the TokenEndpoint; if the token exceeds 4000 characters, it is silently dropped, causing the system to fall back to client credentials a...

EUVD-2026-32300

A flaw was found in Keycloak. An authenticated user with low privileges can exploit this vulnerability by sending an oversized subjecttoken JSON Web Token JWT to the TokenEndpoint. When the token exceeds a 4000-character limit, it is silently dropped, causing the system to fall back to client...

CVE-2026-9704 Keycloak: keycloak: privilege escalation due to oversized subject_token jwt

A flaw was found in Keycloak. An authenticated user with low privileges can exploit this vulnerability by sending an oversized subjecttoken JSON Web Token JWT to the TokenEndpoint. When the token exceeds a 4000-character limit, it is silently dropped, causing the system to fall back to client...

Improper Validation of Specified Quantity in Input

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 Improper Validation of Specified Quantity in Input in the TokenEndpoint endpoint when an oversized subjecttok...

Keycloak Services has Improper Validation of Consistency within Input

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...

GHSA-WCVJ-VPVW-9RR5 Keycloak Services has Improper Validation of Consistency within Input

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...

CVE-2026-9689

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...

CVE-2026-9689 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...

CVE-2026-9689

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...

CVE-2026-9689 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...

EUVD-2026-32212

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...

CVE-2026-9689

CVE-2026-9689 affects Keycloak, an open-source identity and access management solution. The issue lies in the OIDC redirect URI handling when a client accepts broad redirect URIs, enabling an attacker to craft a special web address that could cause the client to prefer attacker-controlled informa...

CVE-2026-9689

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...

Improper Validation of Consistency within Input

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 Improper Validation of Consistency within Input via the authentication process when a client is configured wi...

CVE-2026-9689: Improper Validation of Consistency within Input

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 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 the client application’s configuration accepts broad redirect URIs. A remote attacker could manipulate the authentication process...

Keycloak 安全漏洞

Keycloak is an open-source identity and access management solution developed by Keycloak itself. There is a security vulnerability in Keycloak. This vulnerability arises when authenticated low-privilege users can send excessively large SubjectToken JWT tokens to the TokenEndpoint. When the token...

PT-2026-55159

A flaw was found in Keycloak. An authenticated user with low privileges can exploit this vulnerability by sending an oversized subject token JSON Web Token JWT to the TokenEndpoint. When the token exceeds a 4000-character limit, it is silently dropped, causing the system to fall back to client...

PT-2026-43993

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description An authenticated user with low privileges can achieve privilege escalation by sending an oversized JSON Web Token JWT, which is a compact, URL-safe means of representing claims to be...