CVE-2026-47103: python-statemachine SCXML <data expr> Eval Injection

June 18, 2026

python-statemachine 3.1.2 evaluates <data expr="..."> attributes in SCXML documents using Python’s eval(). Any application that passes attacker-controlled SCXML content to SCXMLProcessor is vulnerable to arbitrary code execution in the context of the hosting process.

References

github.com/advisories/GHSA-v4jc-pm6r-3vj8
github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0
github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8
nvd.nist.gov/vuln/detail/CVE-2026-47103
www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection

Code Behaviors & Features

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