CVE-2026-6401
Bottom Bar <= 0.1.7 - Cross-Site Request Forgery to Settings Update
- State
- Published
- Severity
- 4.3 Medium
- Published
- May 20, 2026
- Updated
- May 20, 2026
- Reserved
- Apr 15, 2026
Description
The Bottom Bar plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 0.1.7. This is due to missing nonce verification on the plugin's settings update forms handled in bottom-bar-admin.php. None of the three settings forms (main settings, sharing services, restore defaults) include a wp_nonce_field(), and the server-side processing code never calls check_admin_referer() or any equivalent nonce validation before processing POST data and calling update_option(). This makes it possible for unauthenticated attackers to trick a logged-in administrator into submitting a crafted request that updates plugin configuration options, such as changing the language, maximum post counts, or enabled sharing services.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | Wordfence |
Weaknesses
- CWE-352 Cross-Site Request Forgery (CSRF)
Affected Products
| Product | Versions |
|---|---|
Bottom Barsvil4ok |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/db0715ed-a06e-4a68-b9c3-408887cae113?source=cve
- https://plugins.trac.wordpress.org/browser/bottom-bar/trunk/bottom-bar-admin.php#L16
- https://plugins.trac.wordpress.org/browser/bottom-bar/tags/0.1.7/bottom-bar-admin.php#L16
- https://plugins.trac.wordpress.org/browser/bottom-bar/trunk/bottom-bar-admin.php#L59
- https://plugins.trac.wordpress.org/browser/bottom-bar/tags/0.1.7/bottom-bar-admin.php#L59
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