CVE-2024-28713Public exploitNetwork attack vector

Code execution via malicious FreeMarker theme template

Published Mar 28, 2024 · Updated Jul 9, 2026

Code execution in theme management in Mtons Mblog 3.5.0 allows remote attackers to run commands by uploading a crafted theme archive. The upload path accepts a ZIP containing an attacker-modified FreeMarker index template and renders it after the theme is enabled, evaluating template directives through FreeMarker 2.3.29. Exploitation requires access to theme management and a request that renders the malicious index; successful execution runs with the server process's privileges.

CVSS severity9.8
Critical
EPSS probability1.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in theme management in Mtons Mblog 3.5.0 allows remote attackers to run commands by uploading a crafted theme archive. The upload path accepts a ZIP containing an attacker-modified FreeMarker index template and renders it after the theme is enabled, evaluating template directives through FreeMarker 2.3.29. Exploitation requires access to theme management and a request that renders the malicious index; successful execution runs with the server process's privileges.

The record

CVE
CVE-2024-28713
Published
Mar 28, 2024
Updated
Jul 9, 2026
Vendor
Mtons
Product
Mblog
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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=3.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mtons · Mblogversion=3.5.0

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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