SupportCandy – Helpdesk & Customer Support Ticket System <= 3.4.4 - Authenticated (Subscriber+) Insecure Direct Object Reference

Authorization Bypass Through User-Controlled Key
CVE CVE-2026-1251
CVSS Medium (5.4)
Publicly Published January 23, 2026
Last Updated January 31, 2026
Researcher Theklis
Description

The SupportCandy – Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.4.4 via the 'add_reply' function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to steal file attachments uploaded by other users by specifying arbitrary attachment IDs in the 'description_attachments' parameter, re-associating those files to their own tickets and removing access from the original owners.

References

1 affected software package

Software Type Plugin
Software Slug supportcandy (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 3.4.4
Patched Version
  • 3.4.5
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