CVE-2026-47103

Summary

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.

Affected Software

Weaknesses

• CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: total

Additional References

• https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8

References

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

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