GHSA-3m8r-w7xg-jqvw: DNN.PLATFORM (CVE-2025-64095)

DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite

CVSS 10.0 CriticalCriticalEPSS 0.47 · 98th percentile

Critical, because:

CVSS score 10.0: 9.0 or more.
CVSS score 10.0 (7.0 or more) and EPSS 0.47 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

Published by the GitHub Advisory Database at 29 Oct 2025, 21:48 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
DNN.PLATFORM	NuGet	<10.1.1	10.1.1

Identifiers

GHSA-3m8r-w7xg-jqvw · CVE-2025-64095

Weakness (CWE)

CWE-434

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

DNN.PLATFORM versions before 10.1.1 are affected. An unauthenticated remote attacker can upload files through the default HTML editor provider and overwrite existing files, which allows defacing the site and, combined with another issue, injecting cross-site scripting payloads. Upgrade to DNN.PLATFORM 10.1.1 or later.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
10.0	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.47, the 98th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 15:22 UTC First seen by agentprime
31 Oct 2026, 15:22 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.