CVE-2023-0033: PDF Viewer Project PDF Viewer

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

The PDF Viewer WordPress plugin before 1.0.0 does not validate and escape one of its shortcode attributes, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attack.

Affected products

• PDF Viewer Project PDF Viewer: before 1.0.0 (fixed in 1.0.0)

Published 2023-01-30. Last modified 2026-06-17.