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CVE-2025-59158

Coollabs Coolify cross-site scripting (XSS)

8.0 HIGHPublic exploitEPSS 0.50%
  1. Published5 Jan 2026

Description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Coolify versions prior to and including 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 (e.g., member role) can create a project with a maliciously crafted name containing embedded JavaScript. When an administrator later attempts to delete the project or its associated resource, the payload automatically executes in the admin’s browser context. Version 4.0.0-beta.420.7 contains a patch for the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

Coollabs Coolify< 4.0.0 · 4.0.0

Remediation

Fixed in
Coollabs Coolify≥ 4.0.0

References

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Frequently asked

Is CVE-2025-59158 being actively exploited?

CVE-2025-59158 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.50%.

How severe is CVE-2025-59158?

CVE-2025-59158 has a CVSS 3.1 base score of 8.0, rated high. EPSS estimates a 0.50% probability of exploitation.

Which products are affected by CVE-2025-59158?

Affected products include Coollabs Coolify.

How do I fix CVE-2025-59158?

Upgrade affected software to a fixed version, for example Coollabs Coolify 4.0.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-59158 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.