CVE-2026-21837
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedHCL Digital Experience is affected by an OS command injection vulnerability in the Digital Asset Management API. An attacker may execute arbitrary operating system commands, typically inheriting the privileges of the vulnerable application, which could possibly lead to a complete system takeover and data compromise.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceHCL Digital Experience contains an OS command injection vulnerability in its Digital Asset Management (DAM) API. Attackers can submit malicious input through the API that gets executed by the underlying operating system, typically with the same privileges as the application server process. This can lead to complete system compromise.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 9.5= 9.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm HCL Digital Experience is installedLocate HCL Digital Experience installation directories or running processes. Common locations include /opt/hcl/dx or C:\IBM\WebSphere\DX on Windows. Check for dxserver or wasserver processes running.Affected if HCL Digital Experience software is present on the system
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Verify the installed version is 9.5Check version files in the installation directory, typically found in version.info or about.html files within the DX installation folder. You can also query the running server process or check the Digital Experience Administration console for version information.Affected if The installed version is exactly 9.5
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Determine if Digital Asset Management API is enabledInspect the Digital Experience configuration files (like plugin-cfg.xml or DAM configuration) in the installation directory to confirm if the Digital Asset Management API module is loaded and active. Check WebSphere/WebSphere Liberty configuration for DAM-related applications.Affected if Digital Asset Management API is enabled and accessible in the configuration
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Check network exposure of the DAM API endpointReview firewall rules, network configurations, and WebSphere deployment descriptors to determine if the DAM API endpoints (typically under /digitalassets/api/ or similar paths) are exposed to untrusted networks.Affected if The DAM API is exposed to network access beyond trusted internal networks
A user is affected if they have HCL Digital Experience version 9.5 installed with the Digital Asset Management API enabled and accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor-provided security patches for HCL Digital Experience when available. As an interim measure, restrict network access to the DAM API endpoint to trusted sources only and implement strict input validation on all API parameters before passing them to system calls.
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-21837 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-21837 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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