M-Files Corporation vulnerabilities and threats

CVE-2026-18372 is a CSS injection vulnerability in M-Files Web versions before 26.8.16330.2. It allows an authenticated vault administrator to inject arbitrary CSS code, which affects the web user interface seen by other vault users. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation, i.e., Cross-Site Scripting).

CVE-2026-18371 is a medium severity HTML injection vulnerability in M-Files Web before version 26.8.16330.2. It allows an authenticated attacker to inject malicious content into the web user interface seen by other users. This vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation, also known as cross-site scripting).

Denial-of-service vulnerability in M-Files Server versions before 26.5.16015.3 allows an authenticated admin user to cause the M-Files Server process to crash and fail to restart.

Denial-of-service condition in M-Files Server versions before 26.5.16015.0, before 26.2 LTS, and before 25.8 LTS SR3 allows an authenticated user to cause the MFserver process to crash

Blind server-side request forgery (SSRF) vulnerability in legacy connection methods of document co-authoring features in M-Files Server before 26.3 allow an unauthenticated attacker to cause the server to send HTTP GET requests to arbitrary URLs.

Denial-of-service vulnerability in M-Files Server versions before 26.1.15632.3 allows an authenticated attacker with vault administrator privileges to crash the M-Files Server process by calling a vulnerable API endpoint.

An information disclosure vulnerability in M-Files Server before versions 25.12.15491.7, 25.8 LTS SR3, 25.2 LTS SR3 and 24.8 LTS SR5 allows an authenticated attacker using M-Files Web to capture session tokens of other active users.

Incomplete removal of sensitive information before transfer vulnerability in M-Files Corporation M-Files Server allows data leak exposure affecting versions before 25.12.15491.7

Improper access checks in M-Files Server before 25.12.15491.7 allows users to download files through M-Files Web using Web Companion despite Print and Download Prevention module being enabled.

Denial-of-service condition in M-Files Server versions before 25.11.15392.1, before 25.2 LTS SR2 and before 25.8 LTS SR2 allows an authenticated user to cause the MFserver process to crash.

Stored cross-site scripting vulnerability in M-Files Hubshare before version 25.8 allows authenticated attackers to cause script execution for other users.

An open redirection vulnerability in M-Files mobile applications for Android and iOS prior to version 25.6.0 allows attackers to use maliciously crafted PDF files to trick other users into making requests to untrusted URLs.

A path traversal issue in the API endpoint in M-Files Server before version 25.6.14925.0 allows an authenticated user to read files in the server.

Stored XSS in M-Files Web versions from 25.1.14445.5 to 25.2.14524.4 allows an authenticated user to run scripts

Improper isolation of users in M-Files Server version before 25.3.14549 allows anonymous user to affect other anonymous users views and possibly cause a denial of service

Stored XSS in Desktop UI in M-Files Server Admin tool before version 25.3.14681.7 on Windows allows authenticated local user to run scripts via UI

Denial of service condition in M-Files Server in versions before 25.1.14445.5 allows an unauthenticated user to consume computing resources in certain conditions.

Unsafe password recovery from configuration in M-Files Server before 25.1 allows a highly privileged user to recover external connector passwords

Unexpected server crash in database driver in M-Files Server before 25.1.14445.5 and before 24.8 LTS SR3 allows a highly privileged attacker to cause denial of service via configuration change.

Local File Inclusion vulnerability in M-Files Server in versions before 24.11 (excluding 24.8 SR1, 24.2 SR3 and 23.8 SR7) allows an authenticated user to read server local files of a limited set of filetypes via document preview.