CVE-2025-39509: Themencode Tnc Flipbook

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeNcode TNC FlipBook pdf-viewer-for-wordpress allows Stored XSS.This issue affects TNC FlipBook: from n/a through <= 12.1.0.

Affected products

• Themencode Tnc Flipbook: up to and including 12.1.0

Published 2025-05-16. Last modified 2026-06-17.