Threat intelligence

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

CVE-2026-13251 · perfmatters

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Perfmatters at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Perfmatters <= 2.6.4 - Unauthenticated Arbitrary File Read via 's' Parameter
Affected software: perfmatters(Plugin)
Affected versions: ≤ 2.6.4
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-13251
Published: 1 July 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory 2c0082ff-2a33-44e9-b0d0-8b9a404ab648). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Perfmatters version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Perfmatters advisoriesBack to catalog