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.
References7
- plugins.trac.wordpress.org/browser/calj/tags/1.5/CalJSettingsPa…
- plugins.trac.wordpress.org/browser/calj/tags/1.5/CalJSettingsPa…
- plugins.trac.wordpress.org/browser/calj/tags/1.5/calj.php#L17
- plugins.trac.wordpress.org/browser/calj/trunk/CalJSettingsPage.…
- plugins.trac.wordpress.org/browser/calj/trunk/CalJSettingsPage.…
- plugins.trac.wordpress.org/browser/calj/trunk/calj.php#L17
- www.wordfence.com/threat-intel/vulnerabilities/id/d1c7df8e-2f82…
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 31 · as of 13 November 2026
- CWE
- CWE-862
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