CVE-2026-47103: Python StateMachine vulnerability
CVE-2026-47103 affects Python StateMachine. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code.
What happened
CVE-2026-47103: Python StateMachine versions 3 0 0 before 3 2 0 contains a remote code execution vulnerability that allows attackers to execute arbitrary code by supp. A security weakness in Python StateMachine is being tracked as CVE-2026-47103. CVE-2026-47103 affects Python StateMachine.
0 contains a remote code execution vulnerability that allows attackers to execute arbitrary code by supplying malicious SCXML documents containing crafted ` ` attributes evaluated unsafely. CVE-2026-47103 currently carries a CRITICAL 9 8 severity signal in the retained vulnerability data. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code.
The important point is that running an affected version of Python StateMachine creates exposure, while an actual compromise still depends on whether the attacker can reach the trigger conditions described above. The SCXMLProcessor passes attacker-controlled expression strings through a call chain ending in Python's built-in eval() without sandboxing, enabling arbitrary code execution in the co. No exploitation flag is present in the retained CyberDeltaForce data at this time; that status can change as vendor and threat-intelligence reporting develops.
Editorial note: this News Brief follows the available evidence and adds length only when additional facts or useful context are available. Where public reporting does not establish a specific victim sequence, CyberDeltaForce does not present one as fact.
What the reporting and advisory establish
0 contains a remote code execution vulnerability that allows attackers to execute arbitrary code by supplying malicious SCXML documents containing crafted ` ` attributes evaluated unsafely.
CVE-2026-47103 currently carries a CRITICAL 9.8 severity signal in the retained vulnerability data.
No exploitation flag is present in the retained CyberDeltaForce data at this time; that status can change as vendor and threat-intelligence reporting develops.
CVE-2026-47103: Python StateMachine versions 3.0.0 before 3.2.0 contains a remote code execution vulnerability that allows attackers to execute arbitrary code by supp
A security weakness in Python StateMachine is being tracked as CVE-2026-47103. The reported consequence is code execution, meaning successful exploitation could make the affected application or process run attacker-controlled code. The SCXMLProcessor passes attacker-controlled expression strings through a call chain ending in Python's built-in eval() without sandboxing, enabling arbitrary code execution in the co. The issue currently carries a CRITICAL 9.8 severity signal in the available reporting. There is no reported exploitation in the current available reporting, so the public picture at this point is a disclosed vulnerability with known exploitation conditions rather than a confirmed compromise of every affected installation. The important point is that running an affected version of Python StateMachine creates exposure, while an actual compromise still depends on whether the attacker can reach the trigger conditions described above.
What this means for your environment
Move from the published facts to the technical path, exposure conditions and defensive decisions that matter in a real environment.
Attack & Exploitation Path
The sequence below shows how the vulnerability can be reached and what successful exploitation can produce. Each stage is labeled by evidence status.
Python StateMachine is present and the vulnerable function or code path is reachable in normal application use.
attacker-controlled input or the relevant workflow reaches the the reported vulnerability condition described in the advisory.
the the reported vulnerability condition is triggered inside Python StateMachine, creating the security boundary failure described by the advisory.
successful exploitation can result in attacker-controlled code execution in the affected application or process.
the practical reach of successful code execution depends on the privileges and resources available to the affected process.
Why this matters to you
CVE-2026-47103 matters because the practical risk is not the score alone — it is whether Python StateMachine exists in your environment and whether the reported trigger or exposure path can reach it. The current severity is CRITICAL 9.8. No exploitation flag is currently present in the CDF data, but that does not remove the need to validate affected systems.
Does this deserve attention in my environment?
Check the conditions below against your use of Python StateMachine.
Select the conditions that are true in your environment. Leaving a condition unselected does not mean you are safe — it only means you have not marked it as applicable.
- Search endpoint, software and asset inventory for Python StateMachine.
- Confirm the vendor-recommended fixed version or mitigation and verify deployment, not just assignment, across affected assets.
- Review relevant endpoint, application, network or identity telemetry for activity associated with exploitation of the affected component.
- Track vendor and government guidance for any change in exploitation status while remediation is underway.
What remains unconfirmed
- Available reporting does not currently indicate exploitation, but that can change as vendor, government or threat-intelligence reporting develops.
Sources & References
Original reporting and technical references are kept here for readers who want to verify the facts. Publisher names stay out of the reading flow above.