CVE-2026-21826: Hcltech Digital Experience

Medium severity, CVSS 6.1. EPSS: 0.1% chance of exploitation in the next 30 days.

HCL Digital Experience and HCL Digital Experience Compose could be susceptible to Host header injection.  An attacker can manipulate the Host header and cause the application to behave in unexpected ways.

Affected products

• Hcltech Digital Experience: version 9.5 only
• Hcltech Digital Experience Compose: version 9.5 only

Published 2026-06-05. Last modified 2026-07-23.