Information disclosure in Hclsoftware Hcl Digital Experience And Compose

CVE-2026-21766

The default login portlet in HCL Digital Experience and Digital Experience Compose insufficiently protects credentials.  Under certain very specific use cases and specific configurations, sensitive information may be written to web server logs.  This only affects applications using the default login portlet.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-21766: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-21766?
CVE-2026-21766 is a medium-severity vulnerability in Hclsoftware Hcl Digital Experience And Compose, classified under Insufficiently Protected Credentials. CVSS score: 5.4/10. Published 2026-08-05.
How severe is CVE-2026-21766?
Medium severity. CVSS v3 base score is 5.4 out of 10.