CVE-2026-21766Network attack vector

Credential disclosure via default login portlet logging

Published Aug 5, 2026 · Updated Aug 5, 2026

Credential disclosure in HCL Digital Experience products 9.5 allows remote authenticated users to obtain credentials via the default login portlet. In specific configurations and use cases, the portlet writes sensitive credential data to web server logs; HCL has not disclosed the triggering request or code path. Exploitation requires high privileges and user interaction, and exposure is limited to applications that use the default login portlet.

CVSS severity5.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential disclosure in HCL Digital Experience products 9.5 allows remote authenticated users to obtain credentials via the default login portlet. In specific configurations and use cases, the portlet writes sensitive credential data to web server logs; HCL has not disclosed the triggering request or code path. Exploitation requires high privileges and user interaction, and exposure is limited to applications that use the default login portlet.

The record

CVE
CVE-2026-21766
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-532, CWE-522, T1552.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4HCL SoftwareCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
CWE-522Insufficiently Protected Credentials
T1552.001Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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