Fast Velocity Minify Plugin up to 3.5.1 on WordPress Setting cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in Fast Velocity Minify Plugin up to 3.5.1 on WordPress. The affected element is an unknown function of the component Setting Handler. Such manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2025-12034. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Fast Velocity Minify Plugin up to 3.5.1 on WordPress. Affected by this issue is an unknown code block of the component Setting Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2025-12034. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-35930). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Fast Velocity Minify Plugin

Version

• 3.5.0
• 3.5.1

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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