CVE-2020-13978Public exploitNetwork attack vector

Administrator command execution via editable PHP chunk

Published Jun 9, 2020 · Updated Aug 27, 2024

OS command injection in Monstra CMS 3.0.4 allows remote authenticated users with administrator access to execute commands through Theme Module. Edit Chunk accepts executable PHP in .chunk.php content, and loading the site renders the chunk and invokes an embedded exec call. The CVE is disputed because exploitation requires an administrator permission that already permits editing executable PHP.

CVSS severity7.2
High
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Monstra CMS 3.0.4 allows remote authenticated users with administrator access to execute commands through Theme Module. Edit Chunk accepts executable PHP in .chunk.php content, and loading the site renders the chunk and invokes an embedded exec call. The CVE is disputed because exploitation requires an administrator permission that already permits editing executable PHP.

The record

CVE
CVE-2020-13978
Published
Jun 9, 2020
Updated
Aug 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 9, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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

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Your stack

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