DNN CKEditor Provider allows unauthenticated upload out-of-the-box

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS

• CVE-2025-62802: 0.23% estimated exploitation activity in the next 30 days; percentile 14.25 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The out-of-box experience for HTML editing allows unauthenticated users to upload files. This opens a potential vector to other security issues and is not needed on most implementations. Details The new out-of-box experience blocks that endpoint to unauthenticated users. If there is a real need for the implementation to allow unauthenticated uploads, then the web.config can be edited by the implementer to remove that block and open the endpoint to the public.

Published by the source

29 Oct 2025, 21:44 UTC

Last modified by the source

29 Oct 2025, 21:44 UTC

Source last checked

26 Oct 2026, 17:04 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-2374-6cvw-qmx6

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# Patch Next advisory brief: CVE-2025-62802

Advisory: DNN CKEditor Provider allows unauthenticated upload out-of-the-box
IDs: CVE-2025-62802, GHSA-2374-6cvw-qmx6
Record: https://patchnext.com/advisories/cve-2025-62802 (revision 1, source checked 26 Oct 2026, 17:04 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: dnn.platform 10.1.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- NuGet dnn.platform: affected < 10.1.1; fixed in 10.1.1

## Suggested inspection (read-only)
- NuGet dnn.platform: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on dnn.platform.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-2374-6cvw-qmx6 (GitHub-reviewed advisory GHSA-2374-6cvw-qmx6 lists affected ranges: NuGet dnn.platform >=0 <10.1.1)

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