CVE-2026-6401
Bottom Bar <= 0.1.7 - Cross-Site Request Forgery to Settings Update
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.
INFO
Published Date :
May 20, 2026, 2:16 a.m.
Last Modified :
July 24, 2026, 8:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Bottom Bar plugin to the latest version.
- Verify nonce implementation in settings forms.
- Apply server-side nonce validation.
- Test settings update functionality.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-6401.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-6401 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-6401
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6401 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6401 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: plugin de WordPress Bottom Bar, Description: El plugin Bottom Bar para WordPress es vulnerable a la falsificación de petición en sitios cruzados en todas las versiones hasta la 0.1.7 inclusive. Esto se debe a la falta de verificación de nonce en los formularios de actualización de configuración del plugin gestionados en bottom-bar-admin.PHP. Ninguno de los tres formularios de configuración (configuración principal, servicios para compartir, restaurar valores predeterminados) incluye un wp_nonce_field(), y el código de procesamiento del lado del servidor nunca llama a check_admin_referer() ni a ninguna validación de nonce equivalente antes de procesar los datos POST y llamar a update_option(). Esto hace posible que atacantes no autenticados engañen a un administrador con sesión iniciada para que envíe una petición manipulada que actualiza las opciones de configuración del plugin, como cambiar el idioma, el número máximo de publicaciones o los servicios para compartir habilitados. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'svil4ok', 'product': 'Bottom Bar', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '0.1.7'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-6401', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-20T14:15:40.602011Z'} -
New CVE Received by [email protected]
May. 20, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Added CWE CWE-352 Added Reference https://plugins.trac.wordpress.org/browser/bottom-bar/tags/0.1.7/bottom-bar-admin.php#L16 Added Reference https://plugins.trac.wordpress.org/browser/bottom-bar/tags/0.1.7/bottom-bar-admin.php#L59 Added Reference https://plugins.trac.wordpress.org/browser/bottom-bar/trunk/bottom-bar-admin.php#L16 Added Reference https://plugins.trac.wordpress.org/browser/bottom-bar/trunk/bottom-bar-admin.php#L59 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/db0715ed-a06e-4a68-b9c3-408887cae113?source=cve