CVE-2026-57671: Perfmatters

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Unauthenticated Cross Site Scripting (XSS) in perfmatters <= 2.6.4 versions.

Affected products

• Perfmatters Perfmatters: up to and including 2.6.4

Published 2026-07-02. Last modified 2026-07-02.