EUVD-2026-66977

In versions of Spring Security's OAuth2 Authorization Server module 7.0.0 through 7.0.4, when Dynamic Client Registration is explicitly enabled, the registration endpoint performs insufficient validation of certain client metadata fields supplied by the registering client. An attacker who possess...

CVE-2026-59354 Spring Security OAuth2 Authorization Server: Insufficient validation of Dynamic Client Registration metadata

In versions of Spring Security's OAuth2 Authorization Server module 7.0.0 through 7.0.4, when Dynamic Client Registration is explicitly enabled, the registration endpoint performs insufficient validation of certain client metadata fields supplied by the registering client. An attacker who possess...

CVE-2026-59354

Spring Security's OAuth2 Authorization Server module (versions 7.0.0 through 7.0.4 ) is affected by insufficient validation of client metadata fields at the Dynamic Client Registration endpoint. When Dynamic Client Registration is explicitly enabled, an attacker holding a valid Initial Access Tok...

Linux Distros Unpatched Vulnerability : CVE-2026-70665

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client...

Linux Distros Unpatched Vulnerability : CVE-2026-44476

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's clientid, which is public...

DEBIAN-CVE-2026-70665

Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client Registration DCR endpoint persists client-supplied scopes without validating them against the server's configured scope set. Under certai...

CVE-2026-70665

Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client Registration DCR endpoint persists client-supplied scopes without validating them against the server's configured scope set. Under certai...

CVE-2026-44476

Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's clientid, which is public information, can authenticate as that client at the token endpoint and obtain an access token without providing its clientsecret. This occu...

DEBIAN-CVE-2026-44476

Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's clientid, which is public information, can authenticate as that client at the token endpoint and obtain an access token without providing its clientsecret. This occu...

CVE-2026-44476 Doorkeeper OpenID Connect: Dynamic Client Registration feature creates public clients with client_secret

Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's clientid, which is public information, can authenticate as that client at the token endpoint and obtain an access token without providing its clientsecret. This occu...

CVE-2026-44476 Doorkeeper OpenID Connect: Dynamic Client Registration feature creates public clients with client_secret

Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's clientid, which is public information, can authenticate as that client at the token endpoint and obtain an access token without providing its clientsecret. This occu...

CVE-2026-70665 Doorkeeper OpenID Connect: DCR endpoint persists unvalidated client-supplied scopes

Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client Registration DCR endpoint persists client-supplied scopes without validating them against the server's configured scope set. Under certai...

CVE-2026-70665

Doorkeeper OpenID Connect (a Rails OpenID Connect provider built on Doorkeeper) is vulnerable to scope privilege escalation prior to version 1.10.4 . The Dynamic Client Registration (DCR) endpoint (DynamicClientRegistrationController#application_params) assigns the scope parameter directly from p...

CVE-2026-70665

Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client Registration DCR endpoint persists client-supplied scopes without validating them against the server's configured scope set. Under certai...

CVE-2026-70665 Doorkeeper OpenID Connect: DCR endpoint persists unvalidated client-supplied scopes

Doorkeeper OpenID Connect implements an OpenID Connect authentication provider for Rails applications on top of Doorkeeper. Prior to 1.10.4, the Dynamic Client Registration DCR endpoint persists client-supplied scopes without validating them against the server's configured scope set. Under certai...

EUVD-2026-65698

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their...

CVE-2026-79786 Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their...

BIT-KEYCLOAK-2026-16102 Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers

A flaw was found in the Dynamic Client Registration DCR component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker...

BIT-KEYCLOAK-2026-15572 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation

A flaw was found in Keycloak's Dynamic Client Registration DCR security policy management. The "Allowed Protocol Mapper Types" policy, which restricts which types of data mappers a client can use, fails to re-validate the mapper type during a client update if the mapper's configuration remains...

PT-2026-81890

Name of the Vulnerable Software and Affected Versions Doorkeeper OpenID Connect versions prior to 1.10.4 Description The Dynamic Client Registration DCR endpoint persists client-supplied scopes without validating them against the server's configured scope set. In the...