---
id: CVE-2025-12034
title: >-
  The Fast Velocity Minify plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via admin settings in all versions up to, and including,
  3.5.1 due to insufficient input sanitization and output escaping
summary: >-
  The Fast Velocity Minify plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via admin settings in all versions up to, and including,
  3.5.1 due to insufficient input sanitization and output escaping. This makes
  it possible …
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2025-10-25'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12034'
references:
  - url: >-
      https://github.com/peixotorms/fast-velocity-minify/commit/55a8b53a2ec6d358f8d7ad181170b9d8112e78ab
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3383015%40fast-velocity-minify&new=3383015%40fast-velocity-minify&sfp_email=&sfph_mail=
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/1c02e03a-7f96-4efa-9071-4a76fb21900d?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00242
epssPercentile: 0.14138
ingestedAt: '2026-10-08T11:31:27.585Z'
---

## Overview

The Fast Velocity Minify plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

## Remediation

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