The CalJ plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.5. This is due to a missing capability check in the CalJSettingsPage class constructor, which processes the 'save-obtained-key' operation directly from POST data without verifying that the requesting user has the 'manage_options' capability, and without any nonce verification. The plugin bootstrap file (calj.php) instantiates CalJSettingsPage whenever is_admin() returns true, which is the case for any authenticated user making requests to wp-admin URLs (including admin-ajax.php). This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the plugin's API key setting and clear the Shabbat cache, effectively taking control of the plugin's API integration.
History

Wed, 22 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Calj
Calj calj Shabbat Times
Wordpress
Wordpress wordpress
Vendors & Products Calj
Calj calj Shabbat Times
Wordpress
Wordpress wordpress
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
Description The CalJ plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.5. This is due to a missing capability check in the CalJSettingsPage class constructor, which processes the 'save-obtained-key' operation directly from POST data without verifying that the requesting user has the 'manage_options' capability, and without any nonce verification. The plugin bootstrap file (calj.php) instantiates CalJSettingsPage whenever is_admin() returns true, which is the case for any authenticated user making requests to wp-admin URLs (including admin-ajax.php). This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the plugin's API key setting and clear the Shabbat cache, effectively taking control of the plugin's API integration.
Title CalJ <= 1.5 - Authenticated (Subscriber+) Arbitrary Settings Modification via 'save-obtained-key' Action
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-04-22T07:45:41.691Z

Updated: 2026-04-22T12:10:09.794Z

Reserved: 2026-03-13T13:19:56.963Z

Link: CVE-2026-4117

cve-icon Vulnrichment

Updated: 2026-04-22T12:10:04.851Z

cve-icon NVD

Status : Deferred

Published: 2026-04-22T09:16:23.027

Modified: 2026-04-22T20:22:50.570

Link: CVE-2026-4117

cve-icon Redhat

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