PT-2025-43204 · Themefusion · Fusion Builder

Published 2025-10-22 · Updated 2025-11-18 · CVE-2025-49940

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions ThemeFusion Fusion Builder versions through 3.13.2

Description The software contains a flaw related to improper input handling during web page generation, specifically a DOM-Based Cross-site Scripting issue. This allows for the execution of malicious scripts within the context of a user's browser. The affected component is fusion-builder.

Recommendations Update ThemeFusion Fusion Builder to a version later than 3.13.2.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-49940

Affected Products

Fusion Builder

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2025-49940 · Security Note
• https://patchstack.com/database/Wordpress/Plugin/fusion-builder/vulnerability/wordpress-fusion-builder-plugin-3-13-2-cross-site-scripting-xss-vulnerability?_s_id=cve · Note
• https://twitter.com/CVEnew/status/1990792009918144560 · Twitter Post
• https://vdp.patchstack.com/database/Wordpress/Plugin/fusion-builder/vulnerability/wordpress-fusion-builder-plugin-3-13-2-cross-site-scripting-xss-vulnerability · Note
• https://vdp.patchstack.com/database/Wordpress/Plugin/fusion-builder/vulnerability/wordpress-fusion-builder-plugin-3-13-2-cross-site-scripting-xss-vulnerability?_s_id=cve · Note