WordPress plugins
CVE-2026-119077
ELEX WordPress HelpDesk & Customer Ticketing System <= 3.3.9 - Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
- Severity
- Critical 9.8
- Published
- 13 Nov 2026
- Last changed
- 13 Nov 2026
- Added to UpHeron
- 13 Nov 2026
- Attack
- Over the network · No login needed · No user action needed
- Attacker can
- Read data · Change data · Take it down
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Sources
- CVE Program
Description
The ELEX WordPress HelpDesk & Customer Ticketing System plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.3.9 via the 'form (specifically the attacker-controlled ticket_label field inside the url-encoded form string)' parameter parameter. This is due to missing server-side authentication and the absence of a class allowlist on deserialization, with the only guard being a nonce publicly emitted on any page carrying the [wsdesk_support] shortcode. This makes it possible for unauthenticated attackers to execute code on the server. A successful exploit requires a single anonymous GET to any public page carrying the [wsdesk_support] shortcode to harvest the publicly emitted wsdesk_nonce value, after which a single unauthenticated POST completes the attack.
Affected software
| Software | Affected versions |
|---|---|
Elex Helpdesk Customer Support Ticket System (WordPress plugin)WordPress plugins · wp-plugin:elex-helpdesk-customer-support-ticket-system |
|
References
- CVE.org https://www.cve.org/CVERecord?id=CVE-2026-119077