Cyber Resilience

CVE-2026-47103

CriticalPublic PoCRCE

Published: 17 June 2026

Published
17 June 2026
Modified
18 June 2026
KEV Added
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Patch
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CVSS Score v4 9.3 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0080 52.1th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-47103 is a critical-severity Eval Injection (CWE-95) vulnerability. Its CVSS base score is 9.3 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Python (T1059.006); ranked in the top 47.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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…

more

chain ending in Python's built-in eval() without sandboxing, enabling arbitrary code execution in the context of the hosting process.

CWE(s)
CWE-95

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.006 Python Execution
Adversaries may abuse Python commands and scripts for execution.
attack.mitre.org →
Why these techniques?

Unsafe eval() of attacker-controlled Python expressions in SCXML directly enables arbitrary Python code execution (T1059.006).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

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Python StateMachine
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References