8.8
High
CVE-2026-87760 The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Web Vitals Tracking 5.4 | earliest → 5.4.2 | No fix stated |