CVE-2025-34157
Coolify Stored Cross-Site Scripting (XSS) in Project Name Field
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.
Fixes and workarounds
Fix
The project maintainer has confirmed that this vulnerability was remediated in version 4.0.0.-beta.420.7 despite not being acknowledged in the release notes.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Coolify coolLabs Technologies coollabsio/coolify
github |
≥ 0; < 4.0.0.-beta.420.7 (affected, custom)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CNA: VulnCheck |
Exploit evidence
- https://github.com/Eyodav/CVE-2025-34157
exploit · CNA: VulnCheck
References
- https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.420.7CNA: VulnCheck · vendor-advisory, patch, release-notes
- https://coolify.io/CNA: VulnCheck · product
- https://github.com/Eyodav/CVE-2025-34157CNA: VulnCheck · technical-description, exploit
For agents and automation
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