Threat intelligence

Perfmatters <= 2.5.9 - Authenticated (Subscriber+) Arbitrary File Overwrite via 'snippets' Parameter

CVE-2026-4351 · 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 <= 2.5.9 - Authenticated (Subscriber+) Arbitrary File Overwrite via 'snippets' Parameter
Affected software: perfmatters(Plugin)
Affected versions: ≤ 2.5.9
Authentication: Authenticated (see advisory title)
Vulnerability type: Other
CVE: CVE-2026-4351
Published: 9 April 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 c172ab2b-ce1f-4a0d-b31f-b75ff2f03506). Methodology and redistribution notes

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