CVE-2026-107758: Colibri Page Builder stored cross-site scripting (XSS) vulnerability
high 7.2 published 2026-10-16
- Affected versions
- 1.0.390 and older
- Fixed in
- unknown
- Latest version
- 1.0.392
- Severity
- High · CVSS 7.2
- Active installs
- 80,000+
- Type
- Stored cross-site scripting (XSS)
What an attacker needs
- Access: None. No account or login is needed.
CVSS vector (score by Wordfence): CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
What to do now
- Update Colibri Page Builder to the latest version (1.0.392). The record does not name a fixed version, so also read the advisory below.
- If you cannot update right away, deactivate it until you can.
- Not sure which version you run? Check your version against every known Colibri Page Builder issue.
With WP-CLI:
wp plugin get colibri-page-builder --field=version. - If you ran an affected version and something looks off (new admin users, spam pages, redirects), run the free scan below.
The advisory
The Colibri Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 1.0.390 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload survives storage because the widened comment allow-list permits SVG elements with arbitrary data-* attributes; execution occurs because colibri.js, enqueued globally on every front-end page, reads the stored data-target value via jQuery.data() — which HTML-entity-decodes it — and passes the resulting string directly into jQuery(), which parses a leading '<' as HTML and fires the embedded event handler.
References
- NVD CVE-2026-107758 nvd.nist.gov
- Wordfence advisory www.wordfence.com
- Plugin source plugins.trac.wordpress.org
Related
Ran an affected version? Check your site for signs of a hack
The free scan reads the public side of your site and looks for spam pages, hidden redirects, injected scripts and blacklist entries. No login, no install, about a minute.
Where this data comes from
- CVE record, score and references: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Versions and install counts: wordpress.org/plugins/colibri-page-builder (Plugins API), fetched 2026-11-04.
- The summary, “what an attacker needs” and “what to do” sections are our plain-English reading of the record and the plugin's release history; the quoted description is the record's own text. Spot an error? Email Daniel.