coollabsio Coolify up to 4.0.0-beta.465 Setting sentinel_token os command injection

Summaryinfo

A vulnerability marked as very critical has been reported in coollabsio Coolify up to 4.0.0-beta.465. This impacts an unknown function of the component Setting Handler. The manipulation of the argument sentinel_token leads to os command injection. This vulnerability is listed as CVE-2026-34034. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in coollabsio Coolify up to 4.0.0-beta.465 and classified as very critical. This issue affects an unknown code of the component Setting Handler. The manipulation of the argument sentinel_token with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.466, the sentinel_token setting is used in shell commands without sufficient validation, allowing an authenticated user with access to server Sentinel settings to inject shell syntax and execute commands on the host when Sentinel is restarted. This issue is fixed in version 4.0.0-beta.466.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-34034 since 03/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/07/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 4.0.0-beta.466 eliminates this vulnerability.

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Productinfo

Vendor

• coollabsio

Name

• Coolify

Version

• 4.0.0-beta.465

Website

• Product: https://github.com/coollabsio/coolify/

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