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CVE-2025-64421

Coollabs Coolify broken access control

8.0 HIGHPublic exploitEPSS 0.30%
  1. Published5 Jan 2026

Description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify versions up to and including v4.0.0-beta.434, a low privileged user (member) can invite a high privileged user. At first, the application will throw an error, but if the attacker clicks the invite button a second time, it actually works. This way, a low privileged user can invite themselves as an administrator to the Coolify instance. After the high privileged user is invited, the attacker can initiate a password reset and log in with the new admin. As of time of publication, it is unclear if a patch is available.

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-2025-64421 being actively exploited?

CVE-2025-64421 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.30%.

How severe is CVE-2025-64421?

CVE-2025-64421 has a CVSS 3.1 base score of 8.0, rated high. EPSS estimates a 0.30% probability of exploitation.

Which products are affected by CVE-2025-64421?

Affected products include Coollabs Coolify.

How do I fix CVE-2025-64421?

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

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