Executive brief
IRIS is a collaborative web platform used by incident responders to share technical details during security investigations. A vulnerability in the platform's file upload system allows users to upload malicious files, such as fake login pages or scripts. This could be exploited to trick other responders into revealing their credentials or to execute unauthorized actions within their web browser, potentially compromising sensitive investigation data.
Technical details
An unrestricted file upload vulnerability exists in the IRIS web application's datastore component. The application fails to properly validate file extensions and MIME types, allowing an authenticated attacker to upload arbitrary HTML files containing malicious JavaScript. When these files are viewed by other users, the server serves them with a 'text/html' Content-Type, leading to Stored Cross-Site Scripting (XSS). This can be leveraged to steal session cookies, perform actions on behalf of other users, or host phishing content on a trusted domain. The vulnerability is patched in version 2.4.28 by implementing stricter file type enforcement.
Affected products
- DFIR-IRIS IRIS < 2.4.28
Timeline
- 2026-01-22: other: Vulnerability discovered/tested by researchers
- 2026-05-28: advisory: GitHub Security Advisory published
- 2026-06-04: disclosed: CVE published to NVD