CVE-2026-21766 HCL Digital Experience and Digital Experience Compose insufficiently protects credentials
Attackers can read sensitive credentials from web server logs if specific configurations are used with the default login portlet.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21766?
CVE-2026-21766 is a medium-severity vulnerability in HCLSoftware HCL Digital Experience and Digital Experience Compose, published on 5 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Which versions are affected by CVE-2026-21766?
How do I fix CVE-2026-21766?
No fix has been published for CVE-2026-21766 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21766 being exploited?
There is no known exploitation of CVE-2026-21766 in the wild and no public exploit code.
Sources
Also known as GHSA-vjj9-w76c-7q84.