CVE-2025-64421

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.

• CWE-863

• https://drive.google.com/file/d/1YZHFgiZv_k9p9909A63DAErsTsh8K1rc/view?usp=drive_linkExploit
• https://github.com/coollabsio/coolify/security/advisories/GHSA-4p6r-m39m-9cm9Exploit, Vendor Advisory

Published

Jan 5, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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