CVE-2025-53255 Overview
CVE-2025-53255 is a missing authorization vulnerability [CWE-862] in the Nabil Lemsieh HurryTimer plugin for WordPress. The flaw affects all versions up to and including 2.13.1. The plugin fails to enforce proper access control checks on protected actions, allowing unauthenticated attackers to reach functionality that should be restricted to authorized users.
An attacker can exploit the issue remotely over the network without user interaction. The impact is limited to integrity, with no direct confidentiality or availability consequences.
Critical Impact
Unauthenticated network attackers can invoke restricted HurryTimer plugin actions on affected WordPress sites, altering plugin state without valid credentials.
Affected Products
- Nabil Lemsieh HurryTimer plugin for WordPress
- All versions from n/a through 2.13.1
- WordPress sites with the HurryTimer plugin installed and active
Discovery Timeline
- 2025-06-27 - CVE-2025-53255 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-53255
Vulnerability Analysis
The HurryTimer plugin exposes one or more endpoints that perform privileged operations without validating the caller's authorization state. Under WordPress, plugins typically guard sensitive actions using current_user_can() capability checks and nonce validation through check_ajax_referer() or wp_verify_nonce(). When these checks are absent or incorrectly configured, any HTTP client can invoke the endpoint.
The vulnerability aligns with Broken Access Control patterns identified by Patchstack in the plugin's handler code. Because the attack vector is network-based and requires no authentication or user interaction, exploitation can be scripted at scale against exposed WordPress sites.
The integrity impact is bounded to modifications the exposed endpoints permit, such as changing plugin configuration, timer state, or related content the plugin manages. Confidentiality and availability are not directly impacted based on the published CVSS vector.
Root Cause
The root cause is a missing authorization check [CWE-862] on plugin actions. The handler executes its logic without confirming that the requester has the WordPress capability required for the action. Access control decisions rely on incorrectly configured security levels rather than explicit capability verification.
Attack Vector
An attacker sends crafted HTTP requests to the vulnerable WordPress endpoint exposed by HurryTimer, typically an admin-ajax.php action or a REST API route registered by the plugin. Because the endpoint accepts the request without verifying authorization, the plugin executes the requested operation with server-side privilege. No account, session cookie, or nonce is required.
Refer to the Patchstack Vulnerability Report for endpoint-level technical details.
Detection Methods for CVE-2025-53255
Indicators of Compromise
- Unauthenticated POST requests to wp-admin/admin-ajax.php referencing HurryTimer actions from unexpected source IPs
- Requests to plugin-registered REST routes under /wp-json/ without valid authentication headers or nonces
- Unexplained modifications to HurryTimer campaign settings, timers, or options recorded in the wp_options table
Detection Strategies
- Enable WordPress audit logging to capture invocation of plugin AJAX actions and REST endpoints along with the authenticated user context
- Alert on HTTP 200 responses to HurryTimer endpoints where the request lacks a valid wordpress_logged_in_* cookie
- Correlate spikes in requests to admin-ajax.php with the action parameter values used by HurryTimer
Monitoring Recommendations
- Monitor web server access logs for repeated requests to plugin endpoints from single source IPs
- Track changes to plugin-managed database options and content for unauthorized modification
- Ingest WordPress and web server logs into a centralized platform for correlation across affected sites
How to Mitigate CVE-2025-53255
Immediate Actions Required
- Identify all WordPress installations running the HurryTimer plugin at version 2.13.1 or earlier
- Update HurryTimer to a fixed release once the vendor publishes one, per the Patchstack advisory
- If no patched version is available, deactivate and remove the plugin until a fix is confirmed
- Restrict access to wp-admin/admin-ajax.php and REST routes at the web application firewall (WAF) where feasible
Patch Information
A fixed version beyond 2.13.1 should be applied when released by the vendor. Consult the Patchstack Vulnerability Report for the current fix status and upgrade guidance.
Workarounds
- Deploy WAF rules that block unauthenticated requests targeting HurryTimer AJAX actions and REST endpoints
- Disable the plugin on production sites until a patched version is installed
- Enforce IP allowlisting on /wp-admin/ paths to limit exposure of administrative endpoints
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
