by Kastro
Paper/Archive/CVE-2025-34157

CVE-2025-34157

coolLabs Technologies Coolify — Coolify Stored Cross-Site Scripting (XSS) in Project Name Field

EPSS 0.5%CVSS 9.4
critical.is priorityof 100
37
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 41.5.415 × 208.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Coolify< 4.0.0.-beta.420.74.0.0.-beta.420.7CNA

Scores by source

VulnCheck (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
NVD9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchgithub.com/coollabsio/coolify/releases/tag/v4.0.0-beta.420.7refcoolify.ioexploitgithub.com/Eyodav/CVE-2025-34157