A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery (SSRF) by manipulating the `client_session_host` parameter during refresh token requests. This occurs when a Keycloak client is configured to use the `backchannel.logout.url` with the `application.session.host` placeholder. Successful exploitation allows the attacker to make HTTP requests from the Keycloak server’s network context, potentially probing internal networks or internal APIs, leading to information disclosure.
Update org.keycloak:keycloak-services to 26.6.3; org.keycloak:keycloak-services to 26.4.13 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanKeycloak Server-Side Request Forgery via OIDC token endpoint manipulation affects org.keycloak:keycloak-services (maven), org.keycloak:keycloak-services (maven). Severity is low. A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery (SSRF) by manipulating the `client_session_host` parameter during refresh token requests. This occurs when a Keycloak client is configured to use the `backchannel.logout.url` with the `application.session.host` placeholder. Successful exploitation allows the attacker to make HTTP requests from the Keycloak server’s network context, potentially probing internal networks or internal APIs, leading to information disclosure.
AI coding agents often install or upgrade packages automatically in maven. A low vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| org.keycloak:keycloak-services |
A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery (SSRF) by manipulating the `client_session_host` parameter during refresh token requests. This occurs when a Keycloak client is configured to use the `backchannel.logout.url` with the `application.session.host` placeholder. Successful exploitation allows the attacker to make HTTP requests from the Keycloak server’s network context, potentially probing internal networks or internal APIs, leading to information disclosure.
Update org.keycloak:keycloak-services to 26.6.3; org.keycloak:keycloak-services to 26.4.13 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanKeycloak Server-Side Request Forgery via OIDC token endpoint manipulation affects org.keycloak:keycloak-services (maven), org.keycloak:keycloak-services (maven). Severity is low. A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery (SSRF) by manipulating the `client_session_host` parameter during refresh token requests. This occurs when a Keycloak client is configured to use the `backchannel.logout.url` with the `application.session.host` placeholder. Successful exploitation allows the attacker to make HTTP requests from the Keycloak server’s network context, potentially probing internal networks or internal APIs, leading to information disclosure.
AI coding agents often install or upgrade packages automatically in maven. A low vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| org.keycloak:keycloak-services |
| >=26.5.0,<26.6.3 |
| 26.6.3 |
| org.keycloak:keycloak-servicesmaven | <26.4.13 | 26.4.13 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard| >=26.5.0,<26.6.3 |
| 26.6.3 |
| org.keycloak:keycloak-servicesmaven | <26.4.13 | 26.4.13 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard