CVE-2026-81021: Unknown Supportcandy

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The SupportCandy WordPress plugin before 3.5.3 does not perform an authorization check on one of its support-ticket attachment download paths, allowing unauthenticated attackers to read protected customer-uploaded attachments by enumerating sequential attachment identifiers.

Affected products

• Unknown Supportcandy: from 3.2.9, before 3.5.3 (fixed in 3.5.3)

Published 2026-09-09. Last modified 2026-09-09.