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
Affected Vendors & Products
References
History
Fri, 17 Apr 2026 17:15:00 +0000
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Fri, 17 Apr 2026 07:00:00 +0000
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| 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). | |
| Title | Canto <= 3.1.1 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Setting Modification | |
| Weaknesses | CWE-862 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-04-17T16:39:26.532Z
Reserved: 2026-04-16T18:15:29.101Z
Link: CVE-2026-6441
Updated: 2026-04-17T16:39:17.355Z
Status : Received
Published: 2026-04-17T07:16:03.020
Modified: 2026-04-17T07:16:03.020
Link: CVE-2026-6441
No data.
OpenCVE Enrichment
Updated: 2026-04-17T08:30:13Z