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M Files ServerApplication · M Files

CVE-2022-4862

HIGH · 7.6 CVSS v3.1 Published 2023-03-06
Fix available
A fix is available. Upgrade to 22.12.12140.3 or later.
See remediation →
80/100
Remediation priority · High
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Rendering of HTML provided by another authenticated user is possible in browser on M-Files Web before 22.12.12140.3. This allows the content to steal user sensitive information. This issue affects M-Files New Web: before 22.12.12140.3.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

This is a stored Cross-Site Scripting (XSS) vulnerability in M-Files New Web where authenticated users can inject malicious HTML content that gets rendered in other users' browsers. This allows attackers to execute scripts in victim browsers and steal sensitive information such as session cookies or credentials.

MitigationUpgrade M-Files New Web to version 22.12.12140.3 or later to patch the HTML injection vulnerability. Alternatively, restrict or sanitize user-provided HTML content until the patch can be applied.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
M Files ServerApplication
Affected:< 22.12.12140.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify M-Files Server installation and version
    Locate the M-Files Server installation and retrieve the installed version number. This is typically available through the M-Files admin interface, the installed programs list, or the M-Files server documentation for version retrieval methods.
    Affected if The installed version is lower than 22.12.12140.3
  2. Confirm M-Files New Web is enabled
    Verify whether the M-Files New Web interface is enabled and accessible to users. Check the M-Files Server configuration settings or admin console for the New Web status.
    Affected if M-Files New Web interface is enabled and accessible to users
  3. Check for user content creation features
    Determine if authenticated users have the ability to create, edit, or upload content that could contain HTML or rich text. Review the vault settings and user permissions related to content creation.
    Affected if Users can create or modify content that supports HTML or rich text formatting
  4. Review audit logs for suspicious content
    Examine M-Files audit logs or recent user-created content for any entries containing HTML tags, script elements, or unusual character sequences that could indicate exploitation attempts.
    Affected if Evidence of HTML or script tags being stored and rendered in user content

You are affected if M-Files Server version is below 22.12.12140.3 AND the M-Files New Web interface is enabled, allowing authenticated users to inject and store malicious HTML content that gets rendered in other users' browsers.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 22.12.12140.3 or later
Fixed in 22.12.12140.3
Interim mitigation

Upgrade M-Files New Web to version 22.12.12140.3 or later to patch the HTML injection vulnerability. Alternatively, restrict or sanitize user-provided HTML content until the patch can be applied.

Recommended fix High confidence

M-Files Server 22.12.12140.3 or later

  1. Identify the current M-Files Server version by checking the About section in M-Files Admin or the server configuration
  2. Create a full backup of the M-Files vault and configuration, including the database
  3. Download M-Files Server version 22.12.12140.3 or later from the official M-Files download portal
  4. Run the M-Files Server installer and follow the upgrade wizard instructions
  5. Complete the upgrade and verify the server starts successfully
  6. Confirm the new version is 22.12.12140.3 or higher by checking About in M-Files Admin
  7. Test that the New Web interface renders content correctly and the XSS vulnerability is resolved

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in M Files Server Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
13.0 hours of engineering $2,280
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,648.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-4862 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data