---
id: CVE-2024-58280
title: >-
  CMSimple 5.15 contains a remote command execution vulnerability that allows
  authenticated attackers to modify file extensions and upload malicious PHP
  files
summary: >-
  CMSimple 5.15 contains a remote command execution vulnerability that allows
  authenticated attackers to modify file extensions and upload malicious PHP
  files. Attackers can append ',php' to Extensions_userfiles and upload a shell
  script t…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-403
vendor: cmsimple
product: cmsimple
affected:
  - cmsimple = 5.15
published: '2025-12-10'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T21:10:00.130'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-58280'
references:
  - url: 'https://www.cmsimple.org'
    label: disclosure@vulncheck.com
  - url: 'https://www.cmsimple.org/downloads_cmsimple50/CMSimple_5-15.zip'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/52040'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/cmsimple-remote-command-execution-via-extensions-configuration
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00941
epssPercentile: 0.59414
ingestedAt: '2026-09-26T21:38:01.498Z'
---

## Overview

CMSimple 5.15 contains a remote command execution vulnerability that allows authenticated attackers to modify file extensions and upload malicious PHP files. Attackers can append ',php' to Extensions_userfiles and upload a shell script to the media directory to execute arbitrary code on the server.

## Affected

- `cmsimple = 5.15`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.