CVE-2025-9633

The LH Signing plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.83. This is due to missing or incorrect nonce validation on the plugin_options function. This makes it possible for unauthenticated attackers to modify plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWE

CWE-352

Published

2025-09-11

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

References

• https://plugins.trac.wordpress.org/browser/lh-signing/trunk/lh-signing.php#L1870
• https://plugins.trac.wordpress.org/browser/lh-signing/trunk/lh-signing.php#L1886
• https://plugins.trac.wordpress.org/browser/lh-signing/trunk/partials/option-settings.php#L3
• https://www.wordfence.com/threat-intel/vulnerabilities/id/fadd7934-bdd9-47e9-bd34-d162ff3b7cd4?source=cve

Check your stackJSON