CVE-2022-3906: Easy Form Builder < 3.4.0 - Admin+ Stored XSS

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-12 · updated 2026-06-17

Description

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).

Affected products

WhiteStudio Easy Form Builder: before 3.4.0 — fixed in 3.4.0

How to fix

Upgrade to a fixed version: WhiteStudio Easy Form Builder 3.4.0. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/fee8652d-cd50-4cb0-b94d-2d124f56af1a
https://wpscan.com/vulnerability/fee8652d-cd50-4cb0-b94d-2d124f56af1a

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