CVE-2026-13251highCWE-22

CVE-2026-13251: high-severity vulnerability in Perfmatters

Perfmatters <= 2.6.4 - Unauthenticated Arbitrary File Read via 's' Parameter

Published

Follow this CVE+ Monitor Perfmatters

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.9%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
perfmatters · Perfmatters
Related CVEs — Perfmatters

In the same product, most dangerous first.

CVE-2026-4350HIGHPerfmatters <= 2.5.9.1 - Authenticated (Subscriber+) Arbitrary File Deletion via 'delete' ParameterEPSS 0.7%CVE-2026-4351HIGHPerfmatters <= 2.5.9 - Authenticated (Subscriber+) Arbitrary File Overwrite via 'snippets' ParameterEPSS 0.4%