CVE-2026-87760

HighCVSS 8.8/10Last modified Oct 13, 2026

Description

The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Oct 11, 2026
Last modified
Oct 13, 2026
NVD status
Deferred

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CVE-2026-87760: High severity, CVSS 8.8 | Vulnix