CVE-2026-47103
Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection
CRITICAL 9.3EPSS 1.4%
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
- fgmacedo · python-statemachine
- CVSS v4.0 VULNCHECK
- 9.3 CRITICAL
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 - CVSS v3.1 VULNCHECK
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.37% chance of exploitation in the next 30 days, 71st percentile
- Published
- 2026-06-17
- Updated
- 2026-10-08
Proof-of-concept exploits (1)
- SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce0★ · 2026-08-16
Security advisories
- fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8
- https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection
- advisories/GHSA-v4jc-pm6r-3vj8
- fgmacedo/python-statemachine/releases/tag/v3.2.0