CVE-2021-24516: Planso Forms

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The PlanSo Forms WordPress plugin through 2.6.3 does not escape the title of its Form before outputting it in attributes, allowing high privilege users such as admin to set XSS payload in it, even when the unfiltered_html is disallowed, leading to an Authenticated Stored Cross-Site Scripting issue.

Affected products

• Planso Planso Forms: up to and including 2.6.3

Published 2021-10-18. Last modified 2026-06-17.