Keycloak

A vulnerability in Keycloak's Dynamic Client Registration component allows authenticated users with an Initial Access Token to forge administrative roles via improper claim validation.

This detection rule identifies suspicious child process executions originating from web server processes on Linux systems, indicating that attackers may have exploited web application vulnerabilities such as command injection or remote file inclusion to establish persistence or execute malicious commands.

This brief details how attackers exploit vulnerable web applications or deploy webshells on Linux systems to achieve persistence by executing unusual shell commands from web server processes, potentially leading to payload downloads, reverse shells, or cron-like task implants.

This brief describes how attackers exploit vulnerabilities in web applications to execute suspicious shell commands via web server processes on Linux, enabling persistence, discovery, credential access, and reverse shell establishment, which can lead to full system compromise and data exfiltration.

A vulnerability exists in Keycloak when its JSON Web Token (JWT) authorization grant preview feature is enabled, allowing a remote attacker with low privileges to exploit CVE-2026-1609 by presenting a valid assertion token from an external identity provider to obtain a JWT for a user account that has been disabled, thereby bypassing access controls and gaining unauthorized access to sensitive resources.

This rule detects unusual child process executions originating from web server processes on Linux systems, which attackers may use to maintain persistence on a compromised system by exploiting web server vulnerabilities.

Identifies suspicious command executions via a web server on Linux systems, which may suggest a vulnerability and remote shell access.

CVE-2026-7571 describes a vulnerability in Keycloak where a low-privilege user can bypass security controls intended to disable the implicit flow in OpenID Connect (OIDC) clients by manipulating client data during session restart, potentially exposing access tokens.

A session fixation vulnerability in Keycloak's /login-actions/restart endpoint allows an unauthenticated attacker to hijack a user's session by crafting a malicious link that resets the authentication flow, potentially leading to account takeover.

A vulnerability in Keycloak's URL validation allows attackers to redirect users to unauthorized URLs by exploiting discrepancies in the handling of the user-info component within URLs, potentially leading to sensitive information exposure.

An authenticated remote attacker can exploit a vulnerability in Keycloak to bypass security measures.

An anonymous, remote attacker can exploit a vulnerability in Keycloak to send arbitrary emails, potentially leading to phishing or social engineering attacks.