CVE-2025-34157
CriticalCVSS 9.0Exploitation Probability (EPSS)
Low risk36th percentile - higher than 36% of all known CVEs
Summary
A stored XSS vulnerability in Coolify versions prior to v4.0.0-beta.420.6 allows an authenticated low-privileged user to inject malicious JavaScript into a project name. The payload executes in the admin's browser when attempting to delete the project or its associated resource.
Risk Assessment
The attack results in full compromise of the Coolify instance, including theft of API tokens, session cookies, and access to WebSocket-based terminal sessions on managed servers.
Recommendation
Immediately upgrade Coolify to version v4.0.0-beta.420.6 or later. Until the update is applied, restrict user privileges and manually inspect project names before deletion.
Original NVD description (English source)
Coolify versions prior to v4.0.0-beta.420.6 are vulnerable to a stored cross-site scripting (XSS) attack in the project creation workflow. An authenticated user with low privileges can create a project with a maliciously crafted name containing embedded JavaScript. When an administrator attempts to delete the project or its associated resource, the payload executes in the admin’s browser context. This results in full compromise of the Coolify instance, including theft of API tokens, session cookies, and access to WebSocket-based terminal sessions on managed servers.