VULNERABILITY INTELLIGENCE
CVE-2026-47103
CVSS score9.8 CRITICAL
EPSS probability1.36%
CISA KEVNot currently listed
Published2026-06-17
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- disclosure@vulncheck.com: CWE-95
- nvd@nist.gov: CWE-94
Primary references
- disclosure@vulncheck.com
- disclosure@vulncheck.com — Release Notes
- disclosure@vulncheck.com — Exploit, Vendor Advisory
- disclosure@vulncheck.com — Third Party Advisory, VDB Entry
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Vendor Advisory