CVE-2026-21766: Credential Exposure (CVSS 5.4)

Description

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.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N

Weakness Type (CWE)

CWE-522 CWE-522

CWE-532 CWE-532

References

Other References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132659

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-21766? +

CVE-2026-21766 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2026-21766? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-21766