A flaw was found in Keycloak. Keycloak’s account console and other pages accept arbitrary text in the error_description query parameter. This text is directly rendered in error pages without validation or sanitization. While HTML encoding prevents XSS, an attacker can craft URLs with misleading messages (e.g., fake support phone numbers or URLs), which are displayed within the trusted Keycloak UI. This creates a phishing vector, potentially tricking users into contacting malicious actors.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A flaw was found in Keycloak. Keycloak’s account console and other pages accept arbitrary text in the
    error_description query parameter. This text is directly rendered in error pages without validation or
    sanitization. While HTML encoding prevents XSS, an attacker can craft URLs with misleading messages (e.g.,
    fake support phone numbers or URLs), which are displayed within the trusted Keycloak UI. This creates a
    phishing vector, potentially tricking users into contacting malicious actors. (CVE-2025-10044)

The version of Keycloak installed on the remote host is prior to 26.2.9. It is, therefore, affected by multiple vulnerabilities as reference in the advisory GHSA-wc64-wmfm-46vw and GHSA-xmcw-mv9p-7pq2.

  - A path traversal validation flaw exists in Keycloak’s vault key handling on Windows. The previous fix for     CVE-2024-10492 did not account for the Windows file separator (\). As a result, a high-privilege     administrator could probe for the existence of files outside the expected realm context through crafted     vault secret lookups. This is a platform-specific variant/incomplete fix of CVE-2024-10492.     (CVE-2025-10043)

  - A flaw was found in Keycloak. Keycloak’s account console and other pages accept arbitrary text in the     error_description query parameter. This text is directly rendered in error pages without validation or     sanitization. While HTML encoding prevents XSS, an attacker can craft URLs with misleading messages (e.g.     fake support phone numbers or URLs), which are displayed within the trusted Keycloak UI. This creates a     phishing vector, potentially tricking users into contacting malicious actors. (CVE-2025-10044)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
465020	Echo: keycloak-25: security update to 25.0.6+e1org.keycloak:keycloak-account-ui: security update to 26.2.9	Tenable Cloud Security	Echo Local Security Checks	Local	medium
465020	Echo: keycloak-25: security update to 25.0.6+e1org.keycloak:keycloak-account-ui: security update to 26.2.9	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
435669	SCA: security update for org.keycloak:keycloak-account-ui, org.keycloak:keycloak-admin-ui (GHSA-27gc-wj6x-9w55)	Tenable Cloud Security	SCA Checks	Local	medium
435669	SCA: security update for org.keycloak:keycloak-account-ui, org.keycloak:keycloak-admin-ui (GHSA-27gc-wj6x-9w55)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
265769	Keycloak < 26.2.9 Multiple Vulnerabilities (GHSA-wc64-wmfm-46vw)(GHSA-xmcw-mv9p-7pq2)	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2025-10044

medium

Tenable Plugins

medium

medium

medium

medium

medium