What is CVE-2026-1251?

CVE-2026-1251 is a medium-severity vulnerability in Psmplugins Supportcandy – Helpdesk & Customer Support Ticket System, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-01-31.

How severe is CVE-2026-1251?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Psmplugins Supportcandy – Helpdesk & Customer Support Ticket System

CVE-2026-1251

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.003 (20.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Psmplugins Supportcandy – Helpdesk & Customer Support Ticket System — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-1251?: CVE-2026-1251 is a medium-severity vulnerability in Psmplugins Supportcandy – Helpdesk & Customer Support Ticket System, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-01-31.
How severe is CVE-2026-1251?: Medium severity. CVSS v3 base score is 5.4 out of 10.