CVE-2026-47103

CRITICAL EPSS 52.0%
Published Jun 17, 20261w ago · Modified Jun 18, 20261w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Jun 17, 2026 1w ago
Last Modified Jun 18, 2026 1w ago

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.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
52.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-95

References 3

  • github.com https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0
  • github.com https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8
  • vulncheck.com https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.