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CVE-2025-64095 is a critical vulnerability in DNN Platform (formerly DotNetNuke) affecting versions prior to 10.1.1. The flaw exists in the default HTML editor provider's file upload functionality, which does not properly enforce authentication or sufficient validation on upload requests. As a result, a remote unauthenticated attacker can submit crafted HTTP POST requests to the HTML editor upload endpoint to upload files and overwrite existing files on the server. The issue is described as stemming from insufficient validation and access control, and the supporting content classifies it as CWE-434. Because existing files can be replaced, attackers can alter site content directly and potentially plant malicious content that is later rendered to users.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a Python proof-of-concept (PoC) exploit for CVE-2025-64095, a vulnerability in DNN (DotNetNuke) CMS prior to version 10.1.1. The exploit targets an unauthenticated file upload flaw in the HTML editor provider, allowing attackers to upload arbitrary files (such as PNG images or SVG files with embedded XSS payloads) to the server without authentication. The main file, 'CVE-2025-64095.py', provides functions to create test files, detect the vulnerability, upload files to the vulnerable endpoint, and verify if the upload was successful by checking several possible file locations. The exploit can be used to deface a website or to inject a stored XSS payload. The repository also includes a README.md with a brief description and usage instructions. No hardcoded IPs or domains are present; the user supplies the target URL at runtime. The exploit is a standalone PoC and does not use any exploitation frameworks.
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13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical unauthenticated file upload and file overwrite vulnerability in the default HTML editor provider of DNN Platform that can lead to full website compromise, including website defacement and replacement of core files.
An unauthenticated arbitrary file upload and overwrite vulnerability in DNN Platform's default HTML editor provider affecting versions prior to 10.1.1, enabling defacement or malicious content injection.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.