What is CVE-2022-3906?

CVE-2022-3906 is a medium-severity vulnerability in Whitestudio Easy Form Builder, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 4.8/10. Published 2022-12-12.

How severe is CVE-2022-3906?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2022-3906 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Whitestudio Easy Form Builder

CVE-2022-3906

The Easy Form Builder WordPress plugin before 3.4.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Published 2022-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (32.2th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Whitestudio Easy Form Builder
Easy Form Builder — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/fee8652d-cd50-4cb0-b94d-2d124f56af1a (technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2022-3906?: CVE-2022-3906 is a medium-severity vulnerability in Whitestudio Easy Form Builder, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 4.8/10. Published 2022-12-12.
How severe is CVE-2022-3906?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2022-3906 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.