CVE-2025-52485
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 · uneditedDNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. In versions 6.0.0 to before 10.0.1, DNN.PLATFORM allows a specially crafted request to inject scripts in the Activity Feed Attachments endpoint which will then render in the feed. This issue has been patched in version 10.0.1.
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 confidenceDNN (DotNetNuke) versions 6.0.0 through 10.0.0 contain a stored Cross-Site Scripting (XSS) vulnerability in the Activity Feed Attachments endpoint. Attackers can inject malicious scripts that persist in the feed and execute when other users view the affected content.
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>= 6.0.0, < 10.0.1CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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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Determine installed DNN versionLog in as Host or Admin, navigate to Host > About, or locate the VersionInfo.config or web.config file in the website root to read the installed DNN version numberAffected if The installed version falls within 6.0.0 through 10.0.0 (inclusive)
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Verify Activity Feed module presenceAccess the DNN site as Host or Admin and check if the Activity Feed module exists on the site by navigating to Pages or checking the module list in the Control PanelAffected if The Activity Feed module is installed and present on the DNN instance
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Confirm Activity Feed Attachments feature is in useLocate the Activity Feed module on a site page (commonly on the profile or home page) and determine if the Attachments feature is enabled or configurable within the module settingsAffected if The Activity Feed module has Attachments functionality enabled and accessible to users
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Inspect Activity Feed Attachments configurationAccess the Activity Feed module settings as an administrator and examine the configuration for file upload or attachment handling in the module parametersAffected if The Activity Feed Attachments endpoint is exposed and accepts user-supplied content
The environment is affected if DNN version is between 6.0.0 and 10.0.0 and the Activity Feed module with Attachments feature is enabled on the site.
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 · scoped10.0.1
Upgrade DNN.PLATFORM to version 10.0.1 or later to patch the XSS vulnerability in the Activity Feed Attachments endpoint.
DNN Platform 10.0.1
- 1. Back up your current DNN installation and database before any upgrade
- 2. Download DNN Platform version 10.0.1 from the official DNN download source (dotnetnuke.com)
- 3. Follow the official DNN upgrade documentation to apply version 10.0.1
- 4. After upgrade, verify the Activity Feed Attachments endpoint no longer accepts script injection
- 5. Test that existing Activity Feed functionality works correctly post-upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-52485 — 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-2025-52485 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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