CVE-2026-4117
The CalJ plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.5.
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/calj/tags/1.5/CalJSettingsPage.php#L25
- https://plugins.trac.wordpress.org/browser/calj/tags/1.5/CalJSettingsPage.php#L30
- https://plugins.trac.wordpress.org/browser/calj/tags/1.5/calj.php#L17
- https://plugins.trac.wordpress.org/browser/calj/trunk/CalJSettingsPage.php#L25
- https://plugins.trac.wordpress.org/browser/calj/trunk/CalJSettingsPage.php#L30
- https://plugins.trac.wordpress.org/browser/calj/trunk/calj.php#L17
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d1c7df8e-2f82-4474-88ef-8c8ddaeb4656?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.