Perfmatters Plugin up to 2.6.4 on WordPress Local Google Fonts Feature path traversal

Summaryinfo

A vulnerability was found in Perfmatters Plugin up to 2.6.4 on WordPress and classified as critical. Impacted is an unknown function of the component Local Google Fonts Feature. Executing a manipulation of the argument s can lead to path traversal. This vulnerability is registered as CVE-2026-13251. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Perfmatters Plugin up to 2.6.4 on WordPress. It has been declared as critical. This vulnerability affects an unknown code of the component Local Google Fonts Feature. The manipulation of the argument s with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. CVE summarizes:

The Perfmatters plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.6.4 via the 's' parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires the Local Google Fonts feature to be enabled (disabled by default), pretty permalinks to be active, and RSS feed links to remain enabled in the plugin settings.

The weakness was published by daroo. The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-13251 since 06/24/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at perfmatters.io.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-41272). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Perfmatters Plugin

Version

• 2.6.0
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4

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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