CVE-2025-47564 Overview
CVE-2025-47564 is a Missing Authorization vulnerability [CWE-862] in the EventON plugin for WordPress developed by ashanjay. The flaw affects EventON versions up to and including 4.9.8. Attackers can reach functionality that is not properly constrained by access control lists (ACLs) because the plugin fails to verify user permissions on certain actions. Exploitation requires no authentication and no user interaction over the network. The issue impacts availability of the affected component but does not directly compromise confidentiality or integrity. Site owners running EventON must upgrade to a fixed release to remove the exposed functionality from unauthenticated callers.
Critical Impact
Unauthenticated network-based attackers can invoke restricted EventON plugin functionality, producing availability impact on affected WordPress sites.
Affected Products
- ashanjay EventON WordPress plugin
- EventON versions from n/a through <= 4.9.8
- WordPress sites with the EventON plugin installed and activated
Discovery Timeline
- 2025-05-16 - CVE-2025-47564 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-47564
Vulnerability Analysis
CVE-2025-47564 is a broken access control weakness in the EventON WordPress plugin. The plugin exposes one or more actions that should be restricted to privileged users but does not enforce capability or nonce checks before executing them. Because WordPress plugins commonly register handlers through admin-ajax.php, REST routes, or admin-post.php, missing authorization on these entry points allows any network caller to reach protected functionality. The Common Weakness Enumeration classifies this issue as CWE-862, Missing Authorization. Impact is limited to availability of the affected component according to the published CVSS vector, meaning an attacker can disrupt plugin state or related resources without directly exfiltrating data.
Root Cause
The root cause is the absence of authorization checks such as current_user_can() or capability-gated nonce verification on plugin action handlers. Sensitive endpoints treat any inbound request as legitimate. Refer to the Patchstack Vulnerability Report for the specific affected handler details.
Attack Vector
An unauthenticated attacker sends crafted HTTP requests to the vulnerable EventON endpoint on a target WordPress site. The plugin processes the request without checking whether the caller holds the required role or capability. The attacker triggers plugin functionality intended for administrators or authenticated users. No exploit code has been publicly released, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2025-47564
Indicators of Compromise
- Unauthenticated POST or GET requests to EventON-registered actions in /wp-admin/admin-ajax.php with action parameters referencing evo_ or eventon_ handlers.
- Unexpected modifications to EventON events, categories, or plugin configuration without corresponding administrator login events in WordPress audit logs.
- Requests to EventON REST routes or admin-post.php from IP addresses that have never authenticated to the site.
Detection Strategies
- Review WordPress access logs for high-volume requests to EventON action endpoints originating from a single IP or user agent.
- Correlate plugin state changes with authenticated session activity to surface unauthorized modifications.
- Deploy a Web Application Firewall (WAF) rule that flags unauthenticated calls to EventON AJAX or REST endpoints.
Monitoring Recommendations
- Enable a WordPress activity logging plugin to record all EventON administrative actions and the initiating user.
- Alert on HTTP 200 responses to EventON action endpoints from unauthenticated sessions.
- Monitor outbound requests and database writes triggered by EventON handlers for anomalies.
How to Mitigate CVE-2025-47564
Immediate Actions Required
- Inventory all WordPress sites and identify installations of the EventON plugin at version 4.9.8 or earlier.
- Update EventON to the patched release documented in the Patchstack Vulnerability Report.
- Restrict access to /wp-admin/admin-ajax.php and REST routes from untrusted networks where feasible.
Patch Information
The vendor addressed the missing authorization issue in a release after EventON 4.9.8. Administrators should upgrade to the latest available version of the EventON plugin through the WordPress plugin dashboard or by replacing the plugin directory with a patched build. Verify the installed version under Plugins > Installed Plugins after the update.
Workarounds
- Deactivate the EventON plugin until the patched version is installed if immediate upgrade is not possible.
- Add WAF rules to block unauthenticated requests to EventON-specific action parameters on admin-ajax.php.
- Restrict access to WordPress administrative endpoints using IP allowlisting at the reverse proxy or hosting provider layer.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
