CVE-2025-39509

MEDIUM 5.4CVE-2025-39509 · Published 16/05/2025 · updated 17/06/2026

In short

CVE-2025-39509 is a MEDIUM (CVSS 5.4) vulnerability affecting tnc flipbook (themencode).
Chance of exploitation in the next 30 days (EPSS): 0.26%, higher than 18.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
tnc flipbook themencode	`≤ 12.1.0`	No fix yet

Description

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.

References

patchstack.com/database/Wordpress/Plugin/pdf-viewer-for-wordpress/vulnerability/wordpress-tnc-flipbook-plugin-12-1-0-cross-site-scripting-xss-vulnerability · Third Party Advisory

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free