CVE-2026-1944
CallbackKiller service widget <= 1.2 - Missing Authorization to Unauthenticated Arbitrary Plugin Settings Update
- State
- Published
- Severity
- 5.3 Medium
- Published
- Feb 14, 2026
- Updated
- Apr 8, 2026
- Reserved
- Feb 4, 2026
Description
The CallbackKiller service widget plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the cbk_save() function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to modify the plugin's site ID settings via the 'cbk_save_v1' AJAX action.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | Wordfence |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
CallbackKiller service widgetkrellbat |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/98a7572d-9642-4150-8112-c0fa2b25ae05?source=cve
- https://plugins.trac.wordpress.org/browser/callbackkiller-service-widget/trunk/callbackkiller-widget.php#L34
- https://plugins.trac.wordpress.org/browser/callbackkiller-service-widget/tags/1.2/callbackkiller-widget.php#L34
- https://plugins.trac.wordpress.org/browser/callbackkiller-service-widget/trunk/callbackkiller-widget.php#L133
- https://plugins.trac.wordpress.org/browser/callbackkiller-service-widget/tags/1.2/callbackkiller-widget.php#L133
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