CVE-2026-109082

A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify...

CVE-2026-109082

A flaw in the keycloak-services component of Keycloak affects the Client-Initiated Backchannel Authentication (CIBA) implementation. The root cause is a failure to verify that a client is authorized to use the CIBA flow, which allows public clients to bypass security requirements. An attacker cou...

CVE-2026-109082 Keycloak-services: keycloak-services: ciba confidential-only contract not enforced for public clients

A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify...

EUVD-2026-97260

A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify...

CVE-2026-109082

A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify...

PT-2026-110484

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component. This component manages authentication flows where a client...

CVE-2026-109082: Improper Authentication

A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify...

CVE-2026-107121

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

EUVD-2026-94213

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

CVE-2026-107121 Keycloak-services: keycloak-services: smtp starttls plaintext credential and message downgrade

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

CVE-2026-107121

A flaw exists in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, the system fails to strictly enforce encrypted connections, allowing a downgrade to unencrypted communication if the encryption request is tampered with. An attacker cap...

CVE-2026-107121 Keycloak-services: keycloak-services: smtp starttls plaintext credential and message downgrade

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

CVE-2026-107121

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

PT-2026-107420

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

CVE-2026-107121: Cleartext Transmission of Sensitive Information

A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An...

CVE-2026-105302

A flaw in the User Session Note mapper of the Keycloak identity and access management solution allows for the exposure of sensitive internal credentials. The mapper fails to validate if a requested session note contains federated access tokens from external identity providers. Consequently, a del...

CVE-2026-101333 Keycloak-services: keycloak-services: unbounded metric series creation via idp tag on broker login endpoint

A flaw was found in the Micrometer user-event metrics listener of Keycloak, a solution for integrated identity and access management. The issue occurs when the listener is configured to include the idp tag. An unauthenticated attacker can send requests to the identity broker login endpoint using...

CVE-2026-97846

The Keycloak-services component contains a vulnerability where the new Standard Token Exchange V2 feature fails to validate the digital certificate required for mTLS holder-of-key binding . This flaw allows an attacker possessing stolen client credentials to obtain a standard, unrestricted token,...

CVE-2026-97846 Keycloak-services: keycloak-services: standard token exchange v2 bypasses mtls holder-of-key binding

Keycloak provides a feature called mTLS holder-of-key binding which ensures that a token can only be used by the client that originally requested it by binding it to their digital certificate. A flaw was discovered where the new Standard Token Exchange V2 feature does not check for this...

CVE-2026-97846 Keycloak-services: keycloak-services: standard token exchange v2 bypasses mtls holder-of-key binding

Keycloak provides a feature called mTLS holder-of-key binding which ensures that a token can only be used by the client that originally requested it by binding it to their digital certificate. A flaw was discovered where the new Standard Token Exchange V2 feature does not check for this...