CVE-2026-47103

CRITICAL 9.8

Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-95
Vendor	fgmacedo
Product	python-statemachine
Published	Jun 17, 2026
Last Updated	Jun 17, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

fgmacedo / python-statemachine

3.0.0 < 3.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0 github.com: https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8 vulncheck.com: https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection

Credits

Sai Teja Erukude VulnCheck