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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-47103 ↗
- github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce ↗
- github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0 ↗
- github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8 ↗
- www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.