XSS in Scott Farrell Wp Hosting Performance Check

CVE-2025-22521

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Scott Farrell wp Hosting Performance Check wp-hosting-performance-check allows Reflected XSS.This issue affects wp Hosting Performance Check: from n/a through <= 2.18.8.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (22.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-22521: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-22521?
CVE-2025-22521 is a high-severity vulnerability in Scott Farrell Wp Hosting Performance Check, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2025-01-09.
How severe is CVE-2025-22521?
High severity. CVSS v3 base score is 7.1 out of 10.
Is CVE-2025-22521 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.