Summaryinfo

A vulnerability was found in Syntx. It has been declared as critical. The impacted element is an unknown function of the component Shell Command Handler. Executing a manipulation can lead to os command injection. This vulnerability is tracked as CVE-2026-30305. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Syntx (version now known) and classified as critical. This vulnerability affects some unknown processing of the component Shell Command Handler. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Syntx's command auto-approval module contains a critical OS command injection vulnerability that renders its whitelist security mechanism completely ineffective. The system relies on fragile regular expressions to parse command structures; while it attempts to intercept dangerous operations, it fails to account for standard Shell command substitution syntax (specifically $(...)and backticks ...). An attacker can construct a command such as git log --grep="$(malicious_command)", forcing Syntx to misidentify it as a safe git operation and automatically approve it. The underlying Shell prioritizes the execution of the malicious code injected within the arguments, resulting in Remote Code Execution without any user interaction.

This vulnerability was named CVE-2026-30305 since 03/04/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/31/2026). 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17186). Once again VulDB remains the best source for vulnerability data.

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Name

• Syntx

CPE 2.3info

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CPE 2.2info

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