CVE-2026-47103CWE-94CWE-95code-injection

CVE-2026-47103

Critical · published June 17, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
71.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01370 · 71.7th percentile
Weaknesses
CWE-94 · Improper Control of Generation of Code ('Code Injection'); CWE-95 · Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Published
2026-06-17T19:16Z
Affected products (1)
ProductVersionsFixed in
fgmacedo/python_statemachine≥ 3.0.0, < 3.2.03.2.0
References (5)
https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce · [email protected]https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0 · [email protected]https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8 · [email protected]https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection · [email protected]https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 JUN 14:32Z
    Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection
    cvelistv5