CVE-2022-22930Public exploitNetwork attack vector

Remote code execution via FreeMarker template injection

Published Jan 20, 2022 · Updated Aug 3, 2024

Server-side template injection in Mingsoft MCMS before 5.2.9 allows remote authenticated users to execute arbitrary code through template editing. The template editor stores attacker-controlled FreeMarker syntax in index.htm, and rendering that page invokes FreeMarker's Execute utility with an operating-system command. The published proof of concept requires access to the back-end template editor; successful exploitation runs commands with the MCMS server process's privileges.

CVSS severity9.8
Critical
EPSS probability23.69%
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

Server-side template injection in Mingsoft MCMS before 5.2.9 allows remote authenticated users to execute arbitrary code through template editing. The template editor stores attacker-controlled FreeMarker syntax in index.htm, and rendering that page invokes FreeMarker's Execute utility with an operating-system command. The published proof of concept requires access to the back-end template editor; successful exploitation runs commands with the MCMS server process's privileges.

The record

CVE
CVE-2022-22930
Published
Jan 20, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1336, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1059Command and Scripting Interpreter

Public exploit references

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