CVE-2026-16602: Unknown Passster

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The Passster WordPress plugin before 4.3.6 does not perform a post-status check before returning post content from an unauthenticated REST endpoint, allowing unauthenticated users to disclose the content of non-public (draft, private, and pending) posts on sites that have a captcha provider configured.

Affected products

• Unknown Passster: before 4.3.6 (fixed in 4.3.6)

Published 2026-08-05. Last modified 2026-08-26.