CVE-2026-47103Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-95
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
fgmacedo python-statemachine fgmacedo:python_statemachine (from the name) | from 3.0.0 before 3.2.0 | CNA record |
fgmacedo python_statemachine fgmacedo:python_statemachine | from 3.0.0 before 3.2.0 | NVD |
References
- https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rcetechnical-description, exploit
- https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0release-notes
- https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8vendor-advisory
- https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injectionthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.