Authorization Flaw in Coolify by Coollabsio
CVE-2026-100744

6.9MEDIUM

Key Information:

Vendor

Coollabsio

Status
Coolify
Vendor
CVE Published:
27 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-100744?

A vulnerability exists in the Coolify application by Coollabsio, specifically related to an authorization issue in the Route-Level Middleware component. This flaw allows an attacker to execute a manipulation that can bypass crucial authorization checks, potentially leading to unauthorized access. The vulnerability affects all versions of Coolify up to 4.1.2 and can be exploited remotely, making it a significant security concern for users. To mitigate this risk, it is strongly recommended to upgrade to version 4.2.0, which includes a necessary patch for this issue.

Affected Version(s)

Coolify 4.1.0

Coolify 4.1.1

Coolify 4.1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-100744 - Proof of Concept

References

https://vuldb.com/vuln/410615
vdb-entry
https://vuldb.com/vuln/410615/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-100744
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

lakshay12311 (VulDB User)
.