---
id: CVE-2025-9633
title: >-
  The LH Signing plugin for WordPress is vulnerable to Cross-Site Request
  Forgery in all versions up to, and including, 2.83
summary: >-
  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 u…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cwe:
  - CWE-352
published: '2025-09-11'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-9633'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/lh-signing/trunk/lh-signing.php#L1870
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/lh-signing/trunk/lh-signing.php#L1886
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/lh-signing/trunk/partials/option-settings.php#L3
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/fadd7934-bdd9-47e9-bd34-d162ff3b7cd4?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00167
epssPercentile: 0.05392
ingestedAt: '2026-09-30T23:29:32.380Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.