CVE-2023-4187: Instantcms

Medium severity, CVSS 4.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Cross-site Scripting (XSS) - Stored in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Affected products

• Instantcms Instantcms: before 2.16.1 (fixed in 2.16.1)

Published 2023-08-05. Last modified 2026-06-17.