Cyber Resilience

CVE-2025-66212

RCE in Coollabs Coolify ≤ 4.0.0

Published
23 December 2025
Modified
17 March 2026
Patch / advisory
CVSS Score v4 9.4
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.033 87th percentile
Risk Priority 45 floored blend · peak EPSS

Summary

CVE-2025-66212 is a critical-severity OS Command Injection (CWE-78) vulnerability in Coollabs Coolify. Its CVSS base score is 9.4 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 13% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

Coolify, an open-source and self-hostable tool for managing servers, applications, and databases, is affected by CVE-2025-66212, an authenticated command injection vulnerability (CWE-78) in the Dynamic Proxy Configuration Filename handling prior to version 4.0.0-beta.451. The flaw occurs because proxy configuration filenames are passed directly to shell commands without proper escaping, allowing injection of malicious payloads.

Attackers with application or service management permissions can exploit this vulnerability remotely over the network (AV:N) with low attack complexity (AC:L), low privileges required (PR:L), and no user interaction (UI:N), resulting in high impacts to confidentiality, integrity, and availability (CVSS 8.8; CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Exploitation enables execution of arbitrary commands as root on managed servers, leading to full remote code execution.

Version 4.0.0-beta.451 addresses the vulnerability by fixing the command injection issue. Official mitigation guidance is provided in the Coolify security advisory (GHSA-q7rg-2j7p-83gp), the associated pull request (#7375), and the release notes for v4.0.0-beta.451. Security practitioners should upgrade affected instances immediately.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to version 4.0.0-beta.451, an authenticated command injection vulnerability in the Dynamic Proxy Configuration Filename handling allows users with application/service management permissions to execute arbitrary commands as…

more

root on managed servers. Proxy configuration filenames are passed to shell commands without proper escaping, enabling full remote code execution. Version 4.0.0-beta.451 fixes the issue.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-66210Same product: Coollabs Coolify
CVE-2025-22605Same product: Coollabs Coolify
CVE-2025-22606Same product: Coollabs Coolify
CVE-2025-66211Same product: Coollabs Coolify
CVE-2025-66209Same product: Coollabs Coolify
CVE-2025-59156Same product: Coollabs Coolify
CVE-2025-66213Same product: Coollabs Coolify
CVE-2025-59157Same product: Coollabs Coolify
CVE-2025-34161Same product: Coollabs Coolify
CVE-2025-64419Same product: Coollabs Coolify

Affected Assets

coollabs
coolify
4.0.0 · ≤ 4.0.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V1.2.5
  • V1.2.8
  • V15.2.5

Mitigating Controls (NIST 800-53 r5) AI

Developer testing and evaluation can discover missing or incorrect command sanitization during development.

Input validation directly neutralizes or rejects special characters that would otherwise alter OS command structure.

Least privilege reduces the permissions available to any process that could be subverted by injected commands.

Least functionality restricts available OS commands and interpreters, limiting the blast radius of injection.

Secure engineering principles require proper neutralization of untrusted input before command construction.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
prevents

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References