What’s Vulnerable › Vulnerabilities

CVE-2026-1251: SupportCandy – Helpdesk & Customer Support Ticket System <= 3.4.4 - Authenticated (Subscriber+) Insecure Direct Object Reference

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-31 · updated 2026-06-17
• Weakness: CWE-639

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.

Affected products

• psmplugins SupportCandy – Helpdesk & Customer Support Ticket System: through 3.4.4

References

• https://plugins.trac.wordpress.org/browser/supportcandy/trunk/includes/admin/tickets/class-wpsc-individual-ticket.php#L1603
• https://plugins.trac.wordpress.org/changeset/3448376/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/89df3005-0967-474f-8a4e-3b23273dd1a2?source=cve

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