CVE-2023-4655: Instantcms

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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

Affected products

• Instantcms Instantcms: before 2.16.1 (fixed in 2.16.1)

Published 2023-08-31. Last modified 2026-06-17.