WordPress plugin
Perfmatters security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 9 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical0
- High4
- Medium5
- Low0
All Perfmatters vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.5 | Unauthenticated Arbitrary File Read via 's' Parameter ≤2.6.4Update to 2.6.5 | CVE-2026-13251 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.6.4Update to 2.6.5 | CVE-2026-57671 | |
| High8.1 | Authenticated (Subscriber+) Arbitrary File Overwrite via 'snippets' Parameter ≤2.5.9Update to 2.6.0 | CVE-2026-4351 | |
| High8.1 | Authenticated (Subscriber+) Arbitrary File Deletion via 'delete' Parameter ≤2.5.9.1Update to 2.6.0 | CVE-2026-4350 |
- High7.5Unauthenticated Arbitrary File Read via 's' Parameter
≤2.6.4Update to 2.6.5
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.6.4Update to 2.6.5
- High8.1Authenticated (Subscriber+) Arbitrary File Overwrite via 'snippets' Parameter
≤2.5.9Update to 2.6.0
- High8.1Authenticated (Subscriber+) Arbitrary File Deletion via 'delete' Parameter
≤2.5.9.1Update to 2.6.0
Perfmatters: common questions
Does Perfmatters have known vulnerabilities?
Yes. VulnCrest Radar lists 9 known vulnerabilities in Perfmatters: 4 high, 5 medium. None are known to affect version null.
How do I check which version of Perfmatters I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Perfmatters vulnerability?
CVE-2026-13251, published Jul 1, 2026: Perfmatters <= 2.6.4 - Unauthenticated Arbitrary File Read via 's' Parameter. Severity: High (CVSS 7.5).
Is any Perfmatters vulnerability listed in CISA KEV?
No. None of the known Perfmatters vulnerabilities is currently listed in the CISA KEV catalog.