CVE-2025-34157
high-risk
Published 2025-08-27
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.
Do I need to act?
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0.06% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.0/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (3)
Product
https://coolify.io/
Third Party Advisory
https://github.com/Eyodav/CVE-2025-34157
63
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
0/34 · Minimal
Exposure
33/34 · Critical