CVE-2025-30851 Overview
CVE-2025-30851 is a missing authorization vulnerability in the Tickera Event Ticketing System plugin for WordPress. The flaw affects all versions up to and including 3.5.5.2. It is classified under [CWE-862] Missing Authorization and stems from incorrectly configured access control security levels within the plugin.
An authenticated attacker with low privileges can exploit the vulnerability over the network without user interaction. Successful exploitation results in limited integrity impact, allowing unauthorized modification of data governed by the plugin.
Critical Impact
Authenticated low-privilege users can bypass access control checks in Tickera versions through 3.5.5.2, enabling unauthorized actions against the event ticketing system.
Affected Products
- Tickera Event Ticketing System WordPress plugin, versions up to and including 3.5.5.2
- WordPress sites running the vulnerable plugin
- Any site permitting low-privileged user registration alongside the plugin
Discovery Timeline
- 2025-03-27 - CVE-2025-30851 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-30851
Vulnerability Analysis
The vulnerability results from missing authorization checks on one or more plugin endpoints. The plugin exposes functionality without validating whether the requesting user holds the required capability or role. This allows any authenticated user, including subscriber-level accounts, to invoke restricted operations.
The issue is limited to integrity impact. Confidentiality and availability of the underlying WordPress environment are not directly affected. However, unauthorized modifications to ticketing data can undermine business logic, event configuration, or attendee records maintained by the plugin.
Root Cause
The root cause is an incorrectly configured access control security level, as described in the Patchstack Vulnerability Advisory. The plugin relies on insufficient capability checks or omits them entirely for privileged actions. This aligns with [CWE-862] Missing Authorization, where a resource performs a security-sensitive action without verifying the caller's permissions.
Attack Vector
Exploitation requires network access to the target WordPress site and a valid low-privileged account. The attacker sends crafted HTTP requests to plugin endpoints that lack proper authorization enforcement. No social engineering or user interaction is needed to trigger the flaw.
See the Patchstack Vulnerability Advisory for endpoint-specific technical details.
Detection Methods for CVE-2025-30851
Indicators of Compromise
- Unexpected modifications to Tickera events, tickets, or attendee records made by non-administrator accounts
- HTTP POST or AJAX requests to Tickera plugin endpoints originating from low-privileged authenticated sessions
- Newly registered subscriber accounts that immediately interact with plugin administrative endpoints
Detection Strategies
- Audit WordPress access logs for requests to /wp-admin/admin-ajax.php and Tickera REST routes issued by non-administrative users
- Review the plugin version installed across WordPress instances and flag any at or below 3.5.5.2
- Correlate WordPress user role data with plugin action logs to identify capability mismatches
Monitoring Recommendations
- Enable WordPress activity logging to capture user, role, IP address, and action metadata for plugin operations
- Alert on ticketing data modifications performed by accounts without the manage_options capability
- Monitor for anomalous spikes in registrations followed by immediate plugin interactions
How to Mitigate CVE-2025-30851
Immediate Actions Required
- Update the Tickera Event Ticketing System plugin to a version later than 3.5.5.2 as soon as the vendor releases a fixed release
- Restrict new user registration on affected WordPress sites until the update is applied
- Audit existing user accounts and remove or downgrade any unnecessary low-privileged accounts
Patch Information
Refer to the Patchstack Vulnerability Advisory for current fix availability. Administrators should upgrade to the vendor-supplied patched version once published and verify the plugin version through the WordPress admin dashboard.
Workarounds
- Deploy a Web Application Firewall (WAF) rule to block unauthenticated or low-privilege requests to Tickera plugin endpoints
- Temporarily deactivate the Tickera plugin on sites where the ticketing functionality is not actively required
- Enforce strong role separation and disable open registration until patched
# Verify installed Tickera plugin version via WP-CLI
wp plugin get tickera-event-ticketing-system --field=version
# Deactivate the plugin as a temporary mitigation
wp plugin deactivate tickera-event-ticketing-system
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.