What is CVE-2026-21826?

CVE-2026-21826 is a medium-severity vulnerability in Hclsoftware Digital Experience & Dx Compose, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-06-05.

How severe is CVE-2026-21826?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Hclsoftware Digital Experience & Dx Compose

CVE-2026-21826

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.

Vulnerability class: Open Redirect

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Hclsoftware Digital Experience & Dx Compose — versions 9.5

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

psirt@hcl.com

Frequently asked questions

What is CVE-2026-21826?: CVE-2026-21826 is a medium-severity vulnerability in Hclsoftware Digital Experience & Dx Compose, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-06-05.
How severe is CVE-2026-21826?: Medium severity. CVSS v3 base score is 6.1 out of 10.