CVE-2026-47103 | Python StateMachine versions 3.0.0 before 3.2.0 contains a r… | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-47103
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-05-18 19:22 UTC
Published: 2026-06-17 14:32 UTC
Last updated: 2026-06-17 14:55 UTC
Primary CWE: CWE-95
Improper Neutralization of Directives in Dynamically Evaluat…
Vendor / Product: fgmacedo / python-statemachine
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products (1)

Vendor	Product	Platform	Versions
fgmacedo	python-statemachine	—	3.0.0 < 3.2.0

Weakness (CWE)

CWE	Source	Description
CWE-95	cna	Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (3)