CVE-2025-34157CRITICAL 9.0EPSS p35.6%
CVE-2025-34157CVE-2025-34157
Description
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.
Scoring
| CVSS 3.1 | 9.0 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| EPSS | 0.45% probability of exploitation · percentile 35.6% · 2026-06-18T12:00:27Z |
| Published | 2025-08-27 |
| Last modified | 2025-09-19 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Input Validationcwe-20 | 0% | live |
| Weakness | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-79 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.