# CVE-2026-11399: Helpdesk Support Ticket System for WooCommerce insecure direct object reference

Source: https://junglewise.ai/threats/cve-2026-11399-the-helpdesk-support-ticket-system-for-woocommerce-plugin-for  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-03. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-11399 · Severity: medium · CVSS 4.3 · Published 2026-10-03

The Helpdesk Support Ticket System plugin for WooCommerce, used by online stores to manage customer support requests, contains a flaw that allows authenticated users to delete support ticket responses belonging to other users. An attacker with basic subscriber-level access can exploit this to disrupt customer support by removing legitimate responses from the support system.

Vendors: [WordPress Plugin](https://junglewise.ai/threats/vendors/wordpress-plugin).

## Quick answers

**Is CVE-2026-11399 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11399 being exploited in the wild.

**How severe is CVE-2026-11399?** Medium severity, with a CVSS score of 4.3, published 3 October 2026.

**Which products and versions are affected?** WordPress Plugin Helpdesk Support Ticket System for WooCommerce up to and including 2.1.6.

**Is there a fix for CVE-2026-11399?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-11399 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-11399?** Check whether you run WordPress Plugin Helpdesk Support Ticket System for WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin fails to validate the 'id' parameter in its ticket response deletion handler, allowing insecure direct object reference (IDOR). Authenticated attackers with subscriber-level access or above can enumerate and delete arbitrary stsw_responses rows by supplying any row ID to the deletion endpoint, after obtaining a nonce from the admin footer. This grants unauthorized modification of data belonging to other users.

## Affected products

- WordPress plugin Helpdesk Support Ticket System for WooCommerce up to and including 2.1.6

## Timeline

- 2026-10-03: disclosed

## References

- [https://plugins.trac.wordpress.org/changeset?reponame=&old=3713322%40support-ticket-system-for-woocommerce&new=3713322%40support-ticket-system-for-woocommerce](https://plugins.trac.wordpress.org/changeset?reponame=&old=3713322%40support-ticket-system-for-woocommerce&new=3713322%40support-ticket-system-for-woocommerce)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/0715b5bf-8123-4e75-95e1-4b7d39f37d64?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/0715b5bf-8123-4e75-95e1-4b7d39f37d64?source=cve)