What’s Vulnerable › Vulnerabilities

CVE-2026-4117: CalJ <= 1.5 - Authenticated (Subscriber+) Arbitrary Settings Modification via 'save-obtained-key' Action

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-22 · updated 2026-06-17
• Weakness: CWE-862

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.

Affected products

• CalJ Shabbat Times: through 1.5

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

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