by Kastro
Paper/Archive/CVE-2026-47103

CVE-2026-47103

fgmacedo python-statemachine — Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection

EPSS 1%public exploitCVSS 9.8
critical.is priorityof 100
54
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 71.7.717 × 2014.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
python-statemachine3.0.0 – < 3.2.03.2.0CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rcerefgithub.com/fgmacedo/python-statemachine/releases/tag/v3.2.0exploitgithub.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8writeupvulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection