CVE-2026-15011: Customer Support Ticket System & Helpdesk <= 6.0.5 - Unauthenticated Code Injection via 'path' Parameter
The Customer Support Ticket System & Helpdesk plugin for WordPress is vulnerable to Code Injection via the 'path' parameter in all versions up to, and including, 6.0.5 due to the use of dynamic function invocation on an attacker-controlled value with insufficient validation. This makes it possible for unauthenticated attackers to invoke arbitrary parameterless PHP functions, which can be used to disrupt site functionality or expose sensitive information. The required nonce is publicly emitted via wplocalizescript whenever the plugin's [emdform] shortcode is rendered on any public-facing page, making the endpoint reachable by unauthenticated visitors without any prior authentication or privilege.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
WordPress Customer Support Ticket System & Helpdesk pluginto a version that resolves this vulnerability.Fixed in 6.0.5 - Compensating control
Restrict access to public-facing pages that render the [emd_form] shortcode until the vulnerable version is patched, since wp_localize_script publicly emits the required nonce on any page where [emd_form] is rendered.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-15011?
CVE-2026-15011 has a severity score of 9.8, categorized as critical.
How does CVE-2026-15011 impact WordPress sites?
CVE-2026-15011 allows unauthenticated attackers to perform code injection on WordPress sites running the vulnerable Customer Support Ticket System & Helpdesk plugin.
How do I fix CVE-2026-15011?
To fix CVE-2026-15011, update the Customer Support Ticket System & Helpdesk plugin to version 6.0.6 or higher.
What versions are affected by CVE-2026-15011?
CVE-2026-15011 affects all versions of the Customer Support Ticket System & Helpdesk plugin up to and including 6.0.5.
What type of vulnerability is CVE-2026-15011?
CVE-2026-15011 is classified as a Code Injection vulnerability due to insufficient validation of user input.