CVE-2022-3284Network attack vector

Authenticated file disclosure via logged download key

Published Mar 6, 2023 · Updated Feb 23, 2026

Information disclosure in M-Files New Web before 22.11.12011.0 allows remote authenticated users to access vault files via exposed keys. The download workflow passes a file-download key containing the session ID in a loggable form, leaving the associated file publicly accessible. A valid vault session is required to generate the key; disclosure grants unauthorized read access to that file.

CVSS severity6.5
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in M-Files New Web before 22.11.12011.0 allows remote authenticated users to access vault files via exposed keys. The download workflow passes a file-download key containing the session ID in a loggable form, leaving the associated file publicly accessible. A valid vault session is required to generate the key; disclosure grants unauthorized read access to that file.

The record

CVE
CVE-2022-3284
Published
Mar 6, 2023
Updated
Feb 23, 2026
Vendor
M-Files
Product
M-Files Web
Classifications
CWE-200, CAPEC-158, T1040
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <22.11.12011.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

M-Files · M-Files Webversion=0 <22.11.12011.0

Published CVSS scores

6.5M-Files CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CAPEC-158Sniffing Network Traffic
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo