CVE-2026-57400 Overview
CVE-2026-57400 is a missing authorization vulnerability [CWE-862] affecting the WP Swings Event Tickets Manager for WooCommerce plugin. The flaw exists in versions up to and including 1.5.5 and stems from incorrectly configured access control on plugin functionality. Unauthenticated attackers can reach protected actions over the network without user interaction. Successful exploitation impacts integrity and availability of the affected WordPress site.
Critical Impact
Network-based attackers can bypass access controls on the Event Tickets Manager for WooCommerce plugin without authentication, altering ticket data or disrupting event functions on WordPress sites running versions up to 1.5.5.
Affected Products
- WP Swings Event Tickets Manager for WooCommerce plugin
- Versions from n/a through 1.5.5
- WordPress sites running WooCommerce with this plugin installed
Discovery Timeline
- 2026-07-13 - CVE-2026-57400 published to the National Vulnerability Database (NVD)
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-57400
Vulnerability Analysis
The vulnerability is a broken access control weakness classified under [CWE-862] Missing Authorization. The plugin exposes functionality that fails to verify whether the requesting user holds the correct capability or role. As a result, unauthenticated actors can invoke actions that should be restricted to administrators or authorized ticket managers. The Patchstack advisory describes the issue as exploitation of incorrectly configured access control security levels within the plugin's request handlers.
Because WordPress plugins commonly register AJAX endpoints, REST routes, or admin-post handlers, missing capability checks (current_user_can()) or nonce verification (check_admin_referer(), wp_verify_nonce()) allow direct invocation from outside authenticated sessions. The attack surface is exposed over standard HTTP or HTTPS traffic to the WordPress site.
Root Cause
The root cause is the absence of proper authorization checks on one or more plugin actions. The plugin does not validate the caller's privileges before executing sensitive operations related to event tickets. Any code path that trusts client input without verifying capabilities allows attackers to invoke privileged functionality anonymously.
Attack Vector
The attack vector is network-based with low complexity and requires no authentication or user interaction. An attacker sends crafted HTTP requests directly to the vulnerable plugin endpoint on a target WordPress site. The request triggers the unauthorized action, resulting in low-impact modifications to integrity and availability of ticket-related data. The vulnerability does not directly expose confidential information.
No public proof-of-concept exploit code has been published for CVE-2026-57400. Refer to the Patchstack WordPress Vulnerability advisory for further technical details.
Detection Methods for CVE-2026-57400
Indicators of Compromise
- Unauthenticated HTTP POST or GET requests to admin-ajax.php or plugin REST routes referencing event-tickets-manager-for-woocommerce action names
- Unexpected changes to ticket records, event configurations, or order metadata in the WooCommerce database
- WordPress audit log entries showing privileged actions with no associated logged-in user session
Detection Strategies
- Inventory WordPress installations and identify sites running Event Tickets Manager for WooCommerce version 1.5.5 or earlier
- Review web server access logs for repeated requests to plugin endpoints originating from unauthenticated sessions
- Deploy a Web Application Firewall (WAF) rule set that flags requests to WordPress plugin handlers missing valid nonces or session cookies
Monitoring Recommendations
- Enable WordPress activity logging to capture plugin action invocations with associated user context
- Monitor outbound anomalies from the WordPress host that could indicate follow-on compromise after ticket data tampering
- Correlate WooCommerce order and ticket table modifications with authenticated administrative sessions to detect unauthorized changes
How to Mitigate CVE-2026-57400
Immediate Actions Required
- Identify all WordPress instances running Event Tickets Manager for WooCommerce and confirm the installed version
- Update the plugin to a version later than 1.5.5 once the vendor publishes a fixed release
- Restrict access to WordPress administrative and AJAX endpoints using network controls or WAF rules until patched
Patch Information
At the time of publication, the vulnerability affects Event Tickets Manager for WooCommerce versions from n/a through 1.5.5. Administrators should consult the Patchstack advisory and the WP Swings plugin repository for the latest fixed release and apply the update through the WordPress plugin management interface.
Workarounds
- Deactivate the Event Tickets Manager for WooCommerce plugin until a patched version is installed
- Apply virtual patching through a WAF to block unauthenticated requests to plugin action handlers
- Limit access to the WordPress site with IP allowlisting or authentication proxies on non-public environments during remediation
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
