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 supplying malicious SCXML documents containing crafted `<data expr="...">` attributes evaluated unsafely. 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 context of the hosting process.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce
https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0	Release Notes
https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection	Third Party Advisory VDB Entry
https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:fgmacedo:python_statemachine:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-06-17 15:16

Updated : 2026-08-28 20:17

NVD link : CVE-2026-47103

Mitre link : CVE-2026-47103

CVE.ORG link : CVE-2026-47103

JSON object : View

Products Affected

fgmacedo

python_statemachine

CWE

CWE-95

Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

CWE-94

Improper Control of Generation of Code ('Code Injection')

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