CVE-2025-64421CWE-863broken-access-control

CVE-2025-64421

High Β· published January 6, 2026

CVSS v3.1
8.0
EPSS
0%
Percentile
21.8
In the wild
Unconfirmed
What it is

⚑ A low-privileged user can invite themselves as an admin! This sneaky trick in Coolify's authentication process makes it alarmingly easy to escalate privileges. πŸ”₯ Think of it like a guest at a party being able to hand out VIP wristbands after initially being denied access β€” just a second click and they’re in the inner circle! If exploited, this vulnerability allows an attacker to gain full administrative access to the Coolify instance, leading to potential data breaches, unauthorized changes to server configurations, and exposure of sensitive information. It’s absolutely devastating, as this can compromise not just the server but the applications and databases it manages!

Put simply

Think of it like a guest at a party being able to hand out VIP wristbands after initially being denied access β€” just a second click and they’re in the inner circle! In versions up to and including v4.0.0-beta.434, a low-privileged user can exploit a flaw in the invite functionality to promote themselves to a high-privileged user. After sending an invite, clicking the button a second time bypasses a temporary error, allowing the attacker to reset the admin's password and gain control.

What to do

If exploited, this vulnerability allows an attacker to gain full administrative access to the Coolify instance, leading to potential data breaches, unauthorized changes to server configurations, and exposure of sensitive information. It’s absolutely devastating, as this can compromise not just the server but the applications and databases it manages! Immediately review your Coolify instances and ensure no low-privileged users have admin access. Monitor for any unauthorized invitations, and if you haven’t already, consider applying any patches or updates released as soon as they’re available. This is essential for securing your setup. You've got this! Stay vigilant and take the necessary steps to enhance your security posture. πŸ›‘οΈ

The record
Technical detail
CVSS v3.1
8.0 Β· HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00302 Β· 21.8th percentile
Weakness
CWE-863 Β· Incorrect Authorization
Published
2026-01-06T01:16Z
Affected products (425)
ProductVersionsFixed in
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References (2)
EPSS history
Timeline
  • 05 JAN 19:42Z
    Coolify has a privilege escalation - low privileged user can invite themselves as an admin user
    cvelistv5