CVE-2026-87760: high-severity vulnerability in Web Vitals Tracking
Web Vitals Tracking <= 5.4.2 - Unauthenticated Stored XSS via Tracking Beacon Metric Name
Published
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.8epss 0.3%
exploitation probability
0.3%top 73% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · Web Vitals Trackingpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/c6250c43-42c5-4c76-9eb9-2b35ba461e8c/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.