# Fusion Page Builder <= 1.6.7 - Authenticated (Contributor+) Sensitive Information Exposure via Template Loader

- **ID:** WPSEC-2026-2599
- **Plugin:** Fusion Page Builder (`fusion`), https://wordpress.org/plugins/fusion/
- **Affected versions:** all versions before 1.7.1
- **Fixed in:** 1.7.1 (Update to 1.7.1 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-639
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-05)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/fusion
- **Fix released:** 2026-11-04
- **Published:** 2026-11-05
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2599/

## Description

The Fusion Page Builder plugin for WordPress is vulnerable to Sensitive Information Exposure via the template load AJAX handler in all versions up to, and including, 1.6.7 due to the handler rendering the content of any published post ID without verifying that it belongs to the template post type. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the rendered content of arbitrary published posts, including password-protected posts and posts of non-public post types.

## References

- https://wpsec.com/vuln/WPSEC-2026-2599/
- https://plugins.svn.wordpress.org/fusion/tags/1.7.1/
- https://wordpress.org/plugins/fusion/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2599/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.