CVE-2024-25931: Heureka CSRF Vulnerability

CVE-2024-25931 Overview

CVE-2024-25931 is a Cross-Site Request Forgery (CSRF) vulnerability in the Heureka Group Heureka WordPress plugin. The flaw affects all versions from an unspecified initial release through version 1.0.8. The issue is categorized under [CWE-352], indicating missing or improper anti-CSRF protections on state-changing requests.

An attacker can trick an authenticated user into submitting a forged request that performs privileged actions inside the plugin. Successful exploitation over the network requires user interaction but no attacker credentials.

Critical Impact
Exploitation can compromise plugin configuration integrity, leak sensitive data, and disrupt availability of WordPress sites running the Heureka plugin up to and including version 1.0.8.

Affected Products

Heureka Group Heureka WordPress plugin, all versions through 1.0.8
WordPress sites with the Heureka plugin installed and activated
Deployments where administrators can be lured into visiting attacker-controlled content

Discovery Timeline

2024-02-29 - CVE-2024-25931 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-25931

Vulnerability Analysis

The Heureka plugin exposes state-changing endpoints that do not validate a per-request anti-CSRF token. When an authenticated WordPress user, typically an administrator, visits an attacker-controlled page, the browser automatically attaches the user's session cookies to any request issued against the vulnerable endpoint. The plugin accepts these requests as legitimate and processes them under the victim's privileges.

Because the request executes with full administrator context, the attacker can alter plugin settings, modify integrations with the Heureka platform, or trigger operations that impact the confidentiality, integrity, and availability of the site. The attack vector is network-based and requires only that the victim be authenticated and interact with attacker-supplied content, such as a crafted link or embedded page element.

Root Cause

The root cause is missing verification of a WordPress nonce or equivalent origin-bound token on sensitive request handlers. WordPress provides wp_nonce_field() and check_admin_referer() for exactly this purpose, but the affected code paths in Heureka through 1.0.8 do not enforce these checks. Requests are authorized solely on the basis of the user's active session.

Attack Vector

An attacker hosts a malicious page that issues a forged HTTP request, typically via an auto-submitting HTML form or image tag, targeting the vulnerable Heureka endpoint. The attacker then delivers a link to a WordPress administrator through phishing, social media, or a comment on an unrelated site. When the administrator, already logged into WordPress, opens the link, the browser sends the forged request with valid session cookies, and the plugin processes the action as authorized.

See the Patchstack Vulnerability Database Entry for additional technical context.

Detection Methods for CVE-2024-25931

Indicators of Compromise

Unexpected changes to Heureka plugin configuration or integration settings in wp_options
WordPress access logs showing POST requests to Heureka plugin endpoints with external Referer headers
Administrator sessions performing plugin actions immediately after visiting external URLs
Audit log entries for plugin setting changes that do not correlate with legitimate admin activity

Detection Strategies

Inspect HTTP request logs for state-changing requests to Heureka endpoints that lack a valid nonce parameter
Correlate Referer header values on plugin admin requests against expected WordPress admin origins
Enable and review WordPress audit logging plugins to capture configuration changes with request metadata
Alert on plugin option modifications outside of scheduled maintenance windows

Monitoring Recommendations

Forward WordPress and web server logs to a centralized logging platform for correlation and retention
Baseline normal administrator behavior and alert on cross-origin POST requests targeting plugin endpoints
Monitor for spikes in 4xx/3xx responses on plugin URLs that may indicate reconnaissance of CSRF endpoints
Track plugin version inventory to identify hosts still running Heureka 1.0.8 or earlier

How to Mitigate CVE-2024-25931

Immediate Actions Required

Identify all WordPress instances running the Heureka plugin at version 1.0.8 or earlier
Update the Heureka plugin to a fixed version once released by the vendor, or deactivate and remove the plugin if a patch is not yet available
Force logout of all administrator sessions and rotate credentials for any account that may have been targeted
Review plugin and site configuration for unauthorized changes made during the exposure window

Patch Information

No fixed version is listed in the enriched CVE data. Monitor the Patchstack Vulnerability Database Entry and the vendor's plugin page for an updated release that adds nonce verification to the affected endpoints.

Workarounds

Deactivate the Heureka plugin until a patched version is available
Restrict access to /wp-admin/ by IP allowlist at the web server or WAF layer
Deploy a web application firewall rule that blocks POST requests to Heureka plugin endpoints missing a valid _wpnonce parameter or with an untrusted Referer header
Require administrators to use isolated browser profiles for WordPress administration to reduce exposure to cross-site request forgery

bash

# Example: temporarily deactivate the Heureka plugin via WP-CLI
wp plugin deactivate heureka
wp plugin status heureka