PowSyBl up to 7.2.1 LocalCommandExecutor os command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in PowSyBl up to 7.2.1. Impacted is the function UnixLocalCommandExecutor.execute/WindowsLocalCommandExecutor.execute of the component LocalCommandExecutor. Executing a manipulation can lead to os command injection. The identification of this vulnerability is CVE-2026-55673. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in PowSyBl up to 7.2.1. This vulnerability affects the function UnixLocalCommandExecutor.execute/WindowsLocalCommandExecutor.execute of the component LocalCommandExecutor. 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:

PowSyBl (Power System Blocks) is a framework to build power system oriented software. Prior to 7.2.2, UnixLocalCommandExecutor and WindowsLocalCommandExecutor concatenate command arguments and environment variables into strings interpreted through bash -c or cmd /c without sufficient escaping. Attacker-controlled values reaching UnixLocalCommandExecutor.execute, WindowsLocalCommandExecutor.execute, LocalComputationManager.execute, ParallelLoadFlowActionSimulator.run, ActionSimulatorTool.run, AmplModelRunner.run, or AmplModelRunner.runAsync can break out of the intended command and execute arbitrary shell commands as the JVM user. The affected itools paths include action-simulator with task-count, security-analysis with external, and dynamic-security-analysis. Downstream CLI tools, libraries, REST front ends, and multi-tenant grid-analysis services that forward less-trusted contingency identifiers or computation parameters into these APIs can expose the injection remotely. This issue is fixed in version 7.2.2.

The advisory is available at github.com. This vulnerability was named CVE-2026-55673 since 06/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

Upgrading to version 7.2.2 eliminates this vulnerability.

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

Productinfo

Name

• PowSyBl

Version

• 7.2.0
• 7.2.1

CPE 2.3info

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• 🔒

CPE 2.2info

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• 🔒

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

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