CVE-2025-34157

Public Exploit
Coolify Stored Cross-Site Scripting (XSS) in Project Name Field

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.

Remediation

Solution:

  • 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.

Category

9.4
CVSS
Severity: Critical
CVSS 4.0 •
EPSS 0.04%
Vendor Advisory github.com
Affected: coolLabs Technologies Coolify
Published at:
Updated at:

References

Link Tags
https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.420.7 patch vendor advisory
https://coolify.io/ product
https://github.com/Eyodav/CVE-2025-34157 technical description exploit

Frequently Asked Questions

What is the severity of CVE-2025-34157?
CVE-2025-34157 has been scored as a critical severity vulnerability.
How to fix CVE-2025-34157?
To fix CVE-2025-34157: 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.
Is CVE-2025-34157 being actively exploited in the wild?
It is possible that CVE-2025-34157 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-34157?
CVE-2025-34157 affects coolLabs Technologies Coolify.
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