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CVE-2026-11399: Helpdesk Support Ticket System for WooCommerce <= 2.1.6 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary Ticket Response Deletion via 'id' Parameter

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-03 · updated 2026-10-06
• Weakness: CWE-639

Description

The Helpdesk Support Ticket System for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.1.6 via the 'id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary ticket responses belonging to other users by supplying any stsw_responses row ID to the deletion handler after obtaining the nonce from the admin footer.

Affected products

• WPFactory Helpdesk Support Ticket System for WooCommerce: through 2.1.6

References

• 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

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