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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-6441 Detail

Description

The Canto plugin for WordPress is vulnerable to Missing Authorization in versions up to and including 3.1.1. This is due to the absence of any capability check or nonce verification in the updateOptions() function, which is exposed via two AJAX hooks: wp_ajax_updateOptions (class-canto.php line 231) and wp_ajax_fbc_updateOptions (class-canto-settings.php line 76). Both hooks are registered exclusively under the wp_ajax_ prefix (requiring only a logged-in user), with no call to current_user_can() or check_ajax_referer(). This makes it possible for authenticated attackers with subscriber-level access and above to arbitrarily modify or delete plugin options controlling cron scheduling behavior (fbc_duplicates, fbc_cron, fbc_schedule, fbc_cron_time_day, fbc_cron_time_hour, fbc_cron_start) and to manipulate or clear the plugin's scheduled WordPress cron event (fbc_scheduled_update).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://plugins.trac.wordpress.org/browser/canto/tags/3.1.1/includes/class-canto-settings.php#L603 Wordfence
https://plugins.trac.wordpress.org/browser/canto/tags/3.1.1/includes/class-canto.php#L231 Wordfence
https://plugins.trac.wordpress.org/browser/canto/tags/3.1.1/includes/class-canto.php#L572 Wordfence
https://plugins.trac.wordpress.org/browser/canto/trunk/includes/class-canto-settings.php#L603 Wordfence
https://plugins.trac.wordpress.org/browser/canto/trunk/includes/class-canto.php#L231 Wordfence
https://plugins.trac.wordpress.org/browser/canto/trunk/includes/class-canto.php#L572 Wordfence
https://www.wordfence.com/threat-intel/vulnerabilities/id/c1a0200f-9861-4eca-adbf-d458eb6b4e63?source=cve Wordfence

Weakness Enumeration

CWE-ID CWE Name Source
CWE-862 Missing Authorization Wordfence  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-6441
NVD Published Date:
04/17/2026
NVD Last Modified:
04/17/2026
Source:
Wordfence