CVE-2026-13251CWE-22

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

High · published July 2, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
60.6
In the wild
Unconfirmed
What it is

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 record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00941 · 60.6th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-07-02T09:32Z
EPSS history
Timeline
  • 02 JUL 09:32Z
    Perfmatters <= 2.6.4 - Unauthenticated Arbitrary File Read via 's' Parameter
    cvelistv5