CVE-2025-59854
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 DFXAnalytics is affected by an Insecure Security Header Configuration vulnerability where the application utilizes the outdated X-XSS-Protection header, which could allow an attacker to exploit browser-specific rendering flaws or bypass security controls that should instead be managed by a robust Content Security Policy (CSP).
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 · high confidenceHCL DFXAnalytics returns the deprecated X-XSS-Protection HTTP header in responses, which is considered a security weakness. Modern browsers have reduced or removed support for this header, and its presence can sometimes be exploited to bypass security controls or introduce browser-specific rendering issues that a proper Content Security Policy (CSP) would prevent.
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< 4.1CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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 if HCL DFXAnalytics is deployedReview your web application infrastructure or application inventory to determine if HCL DFXAnalytics component is installed and serving HTTP responses.Affected if The component is present in your environment.
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Determine the installed version of HCL DFXAnalyticsCheck the installed version of HCL DFXAnalytics against the affected range. Consult your software inventory, deployment documentation, or use vendor-provided version inspection methods to confirm the exact version number.Affected if The installed version is lower than 4.1.
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Capture an HTTP response from the applicationSend an HTTP request to any endpoint served by the DFXAnalytics component and capture the response headers using a tool such as curl -I, browser developer tools, or a network traffic analyzer.Affected if The response contains the X-XSS-Protection header.
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Verify the X-XSS-Protection header valueExamine the captured HTTP response headers and locate the X-XSS-Protection header. Note its value (e.g., 1, 1; mode=block).Affected if The X-XSS-Protection header is present with any value other than 0.
You are affected if HCL DFXAnalytics version lower than 4.1 is deployed and HTTP responses include the X-XSS-Protection header with a non-zero value.
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.
dbcve · scoped4.1
Replace the X-XSS-Protection header with a robust, properly configured Content Security Policy (CSP) that defines trusted content sources and blocks inline scripts. If legacy browser support is required, set X-XSS-Protection to '0' before implementing full CSP.
4.1
- 1. Back up the current Dfxanalytics installation and configuration files.
- 2. Download Dfxanalytics version 4.1 from the official HCL support portal at support.hcl-software.com.
- 3. Stop the Dfxanalytics service before beginning the upgrade process.
- 4. Install version 4.1 following the standard HCL installation documentation.
- 5. After installation, verify that the application is using Content Security Policy (CSP) headers instead of the deprecated X-XSS-Protection header.
- 6. Test the upgraded application to ensure all functionality works correctly.
- 7. Restart the Dfxanalytics service and monitor for any errors.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-59854 — 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-2025-59854 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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