CVE-2022-39017Network attack vector

Account takeover via stored comment-field XSS

Published Oct 31, 2022 · Updated May 2, 2025

Stored cross-site scripting in M-Files Hubshare before 3.3.10.9 allows remote authenticated users to take over visitor accounts. Comment fields accept crafted script content without adequate input validation or output encoding and store it for execution when another user views the page. The attacker must be able to post a comment, and a victim must view the affected page; the script can reset the victim's password and remove MFA.

CVSS severity8.2
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in M-Files Hubshare before 3.3.10.9 allows remote authenticated users to take over visitor accounts. Comment fields accept crafted script content without adequate input validation or output encoding and store it for execution when another user views the page. The attacker must be able to post a comment, and a victim must view the affected page; the script can reset the victim's password and remove MFA.

The record

CVE
CVE-2022-39017
Published
Oct 31, 2022
Updated
May 2, 2025
Vendor
M-Files
Product
M-Files Hubshare
Classifications
CWE-20, CWE-79, CAPEC-63, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 31, 2022CVE publishedPublication date reported by the CVE source.
  2. May 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.3.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

M-Files · M-Files Hubshareversion=3.3.1.6

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
8.2The Missing Link AustraliaCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1189Drive-by Compromise

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

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Your stack

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