9.8criticalCritical
CVE-2026-47103
Fgmacedo Python Statemachine
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 ` ` 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.
Exploitation status
- Published references include exploit or proof-of-concept material. There is no confirmation it is being used in real attacks.
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 9.8 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- CVSS v4
- 9.3
- Weakness
- CWE-95
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-06-17
- Last modified
- 2026-08-28
- Sources
- NVD
Affected products
- Fgmacedo Python Statemachine3.0.0 - 3.2.0
As listed in the NVD configuration data. Not a statement about your estate.
References
- https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce
- https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0
- https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8
- https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection
- https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8