Vulnerability · Published Apr 10, 2026 · Assigned by Wordfence
CVE-2026-1263Webling <= 3.9.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'title' Parameter
Medium 6.4
In plain English
A medium-severity cross-site scripting in Webling from usystemsgmbh. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official description
The Webling plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.9.0 due to insufficient input sanitization, insufficient output escaping, and missing capabilities checks in the 'webling_admin_save_form' and 'webling_admin_save_memberlist' functions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject Webling forms and memberlists with arbitrary web scripts that will execute whenever an administrator views the related form or memberlist area of the WordPress admin.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| usystemsgmbh | Webling | 0 – through 3.9.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/bd8fbe0d-0709-4fa2-9294-393ddcd05b22?source=cve
- https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/lists/Form_List.php#L122
- https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/lists/Memberlist_List.php#L115
- https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/actions/save_form.php#L2
- https://plugins.trac.wordpress.org/browser/webling/tags/3.9.0/src/admin/actions/save_memberlist.php#L2
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fwebling/tags/3.9.0&new_path=%2Fwebling/tags/3.9.1