OliveTin up to 3000.10.0 checkShellArgumentSafety os command injection

Summaryinfo

A vulnerability labeled as critical has been found in OliveTin up to 3000.10.0. This issue affects the function checkShellArgumentSafety. Such manipulation leads to os command injection. This vulnerability is traded as CVE-2026-27626. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in OliveTin up to 3000.10.0. It has been rated as critical. Affected by this issue is the function checkShellArgumentSafety. The manipulation 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. CVE summarizes:

OliveTin gives access to predefined shell commands from a web interface. In versions up to and including 3000.10.0, OliveTin's shell mode safety check (`checkShellArgumentSafety`) blocks several dangerous argument types but not `password`. A user supplying a `password`-typed argument can inject shell metacharacters that execute arbitrary OS commands. A second independent vector allows unauthenticated RCE via webhook-extracted JSON values that skip type safety checks entirely before reaching `sh -c`. When exploiting vector 1, any authenticated user (registration enabled by default, `authType: none` by default) can execute arbitrary OS commands on the OliveTin host with the permissions of the OliveTin process. When exploiting vector 2, an unauthenticated attacker can achieve the same if the instance receives webhooks from external sources, which is a primary OliveTin use case. When an attacker exploits both vectors, this results in unauthenticated RCE on any OliveTin instance using Shell mode with webhook-triggered actions. As of time of publication, a patched version is not available.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-27626 since 02/20/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 02/25/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• OliveTin

Version

• 3000.0
• 3000.1
• 3000.2
• 3000.3
• 3000.4
• 3000.5
• 3000.6
• 3000.7
• 3000.8
• 3000.9
• 3000.10.0

Website

• Product: https://github.com/OliveTin/OliveTin/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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