CVE-2022-4640Public exploitNetwork attack vector

Stored cross-site scripting via unneutralized article content

Published Dec 21, 2022 · Updated Apr 10, 2025

Stored cross-site scripting in MingSoft MCMS 5.2.9 allows remote authenticated users to execute script via the Article save handler. The handler accepts and stores user-controlled article data without neutralizing it before MCMS renders the article as a web page. An authenticated author must save crafted content, and another user must view the resulting page for browser-side execution.

CVSS severity3.5
Low
EPSS probability0.41%
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 MingSoft MCMS 5.2.9 allows remote authenticated users to execute script via the Article save handler. The handler accepts and stores user-controlled article data without neutralizing it before MCMS renders the article as a web page. An authenticated author must save crafted content, and another user must view the resulting page for browser-side execution.

The record

CVE
CVE-2022-4640
Published
Dec 21, 2022
Updated
Apr 10, 2025
Vendor
MingSoft
Product
MCMS
Classifications
CWE-707, CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 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=5.2.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MingSoft · MCMSversion=5.2.9

Published CVSS scores

3.5VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 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 exploitPublished

Weakness, pattern, technique

CWE-707Improper Neutralization
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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