# Tabs Widget for Page Builder <= 1.2.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Nested Tab Widgets

- **ID:** WPSEC-2026-0608
- **Plugin:** Tabs Widget for Page Builder (`tabs-widget-for-page-builder`), https://wordpress.org/plugins/tabs-widget-for-page-builder/
- **Affected versions:** all versions before 1.2.3
- **Fixed in:** 1.2.3 (Update to 1.2.3 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-07)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/tabs-widget-for-page-builder
- **Fix released:** 2026-10-07
- **Published:** 2026-10-08
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0608/

## Description

The Tabs Widget for Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the nested Page Builder layouts of the Tabs widget in all versions up to, and including, 1.2.2. This is due to insufficient input sanitization: each tab's nested layout data was saved after only being JSON-decoded, without running the nested widgets' own sanitization or Page Builder's style sanitization. This makes it possible for authenticated attackers with contributor-level access and above, who can edit Page Builder layouts but lack the unfiltered_html capability, to inject arbitrary web scripts in pages that will execute whenever a user accesses an affected page.

## References

- https://wpsec.com/vuln/WPSEC-2026-0608/
- https://plugins.svn.wordpress.org/tabs-widget-for-page-builder/tags/1.2.3/
- https://wordpress.org/plugins/tabs-widget-for-page-builder/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0608/

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.