CVE-2026-11399 wpcodefactory CVE debrief

Who should care

Defenders responsible for WordPress installations with the Helpdesk Support Ticket System for WooCommerce plugin should assess exposure and prioritize verification and potential remediation.

Why it matters

CVE-2026-11399 is a MEDIUM-severity vulnerability in the Helpdesk Support Ticket System for WooCommerce plugin for WordPress. Defenders should prioritize verifying the presence of this vulnerability in their installations and assess exposure of ticket responses to unauthorized deletion. The vulnerability allows authenticated attackers with subscriber-level access and above to delete arbitrary ticket responses belonging to other users.

• Potential unauthorized deletion of ticket responses by authenticated attackers
• Exposure of ticket responses to unauthorized access or modification

Technical summary

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.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their WordPress installations and assess exposure of ticket responses to unauthorized deletion.

Recommended defensive actions

• Verify the presence of the vulnerable plugin in your WordPress installation
• Assess exposure of ticket responses to unauthorized deletion
• Consider updating to a patched version if available
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 4.3 and MEDIUM severity. The vulnerability is caused by missing validation on a user-controlled key in the 'id' parameter. The CVE record was published on 2026-10-03T06:16:42.230Z and has not been modified since then. The vulnerability affects all versions up to, and including, 2.1.6 of the Helpdesk Support Ticket System for WooCommerce plugin for WordPress. Defenders should verify the presence of this vulnerability in their installations,

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.