CVE-2023-4649: Instantcms

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Session Fixation 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.