CVE-2026-55673

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/powsybl/powsybl-core/commit/17461264d1d18f9bba43bb7855f251e9fa55a4db
https://github.com/powsybl/powsybl-core/commit/7aa28d8c2492bbcd061585cb498acce72d5ed79a
https://github.com/powsybl/powsybl-core/pull/3973
https://github.com/powsybl/powsybl-core/releases/tag/v7.2.2
https://github.com/powsybl/powsybl-core/security/advisories/GHSA-jqvf-j3ww-r8c7

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 20:18

Updated : 2026-09-09 21:09

NVD link : CVE-2026-55673

Mitre link : CVE-2026-55673

CVE.ORG link : CVE-2026-55673

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-88

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

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