CVE-2026-4117 json
CalJ <= 1.5 - Authenticated (Subscriber+) Arbitrary Settings Modification via 'save-obtained-key' Action
published 2026-04-22 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-24658
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- calj CalJ Shabbat Times
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/d1c7df8e-2f82-4474-88ef-8c8ddaeb4656?source=cve
- plugins.trac.wordpress.org /browser/calj/trunk/CalJSettingsPage.php#L30
- plugins.trac.wordpress.org /browser/calj/tags/1.5/CalJSettingsPage.php#L30
- plugins.trac.wordpress.org /browser/calj/trunk/CalJSettingsPage.php#L25
- plugins.trac.wordpress.org /browser/calj/tags/1.5/CalJSettingsPage.php#L25
- plugins.trac.wordpress.org /browser/calj/trunk/calj.php#L17
- plugins.trac.wordpress.org /browser/calj/tags/1.5/calj.php#L17
Sources
- CVE List CVE-2026-4117
- NVD CVE-2026-4117
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.