Stored XSS Vulnerability in Coolify by Coollabs
CVE-2025-59158

9.4CRITICAL

Key Information:

Vendor

Coollabsio

Status
Coolify
Vendor
CVE Published:
5 January 2026

What is CVE-2025-59158?

Coolify, a self-hosted tool for managing servers and applications, suffers from a stored cross-site scripting (XSS) vulnerability in its project creation workflow. This flaw allows an authenticated user with minimal privileges to create a project name that includes malicious JavaScript code. When an administrator attempts to delete this project, the embedded script executes in their browser, potentially leading to unauthorized actions or data exposure. Users are advised to upgrade to version 4.0.0-beta.420.7, which includes a fix for this vulnerability.

Affected Version(s)

coolify < 4.0.0-beta.420.7

References

https://github.com/coollabsio/coolify/security/advisories...
x_refsource_CONFIRM

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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