CVE-2021-41809 SSRF vulnerability in M-Files Server products with versions before 22.1.11017.1, allows requests from server.
Attackers can exploit a preview function to force the M-Files Server to make unauthorized external requests, potentially accessing internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-41809?
CVE-2021-41809 is a low-severity server-side request forgery vulnerability in M-Files Server, published on 18 Jan 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
SSRF vulnerability in M-Files Server products with versions before 22.1.11017.1, in a preview function allowed making queries from the server with certain document types referencing external entities.
Weakness: CWE-918
Which versions are affected by CVE-2021-41809?
It affects 1 product.
Products include M-Files M-Files Server.
How do I fix CVE-2021-41809?
No fix has been published for CVE-2021-41809 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2021-41809 being exploited?
There is no known exploitation of CVE-2021-41809 in the wild and no public exploit code.
Other vulnerabilities in M-Files Server
- CVE-2024-10127 Support for authentication bypass condition in M-Files LDAP authentication
- CVE-2025-5964 Path traversal in M-Files API
- CVE-2024-6789 Path traversal in M-Files API
- CVE-2024-4056 Denial of service condition in M-Files Server
- CVE-2023-6912 Brute force vulnerability in M-Files user authentication
Sources
Also known as GHSA-wrw2-8vg5-g3jj.