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.

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

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.

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

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