CVE-2020-4101
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 · unedited"HCL Digital Experience is susceptible to Server Side Request Forgery."
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 a Server Side Request Forgery (SSRF) vulnerability that allows an attacker to make the server perform arbitrary requests to internal or external resources. The critical severity (9.8) indicates this can be exploited remotely with no authentication, potentially allowing access to internal services, cloud metadata endpoints, or internal network resources.
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= 8.5= 9.0= 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify HCL Digital Experience versionCheck the installed Digital Experience version via the product's admin console, version information file, or package manager. Common locations include the Digital Experience welcome page, the Integrated Solutions Console, or the installation directory release information.Affected if The installed version is 8.5, 9.0, or 9.5 specifically (exact match versions)
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Locate URL-fetching functionalityIdentify endpoints or features that accept user-supplied URLs and perform server-side requests. Look for features like URL redirect, link preview, feed aggregation, or any functionality that fetches content from external URLs based on user input.Affected if The URL-fetching feature is enabled and accessible to unauthenticated users
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Review endpoint accessibilityTest whether the vulnerable URL-handling endpoints are exposed without authentication. Attempt to access common DX URLs that handle URL parameters to determine if they accept arbitrary URLs without requiring credentials.Affected if The URL-fetching endpoints are accessible without authentication
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Check network configurationInspect the server's outbound network configuration, firewall rules, and allowed destinations. Determine if the server can make arbitrary outbound HTTP/HTTPS connections to internal or external resources.Affected if The server permits arbitrary outbound connections from the application
You are affected if running exactly version 8.5, 9.0, or 9.5 of HCL Digital Experience AND the URL-fetching functionality is exposed and accessible without authentication.
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 dataImplement strict input validation on all user-supplied URLs, enforce network segmentation to limit outbound connections from the application server, and configure firewall rules to block unnecessary internal network access. Consider disabling unnecessary URL-fetching functionality if not required for business logic.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-4101 — 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-2020-4101 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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