CVE-2026-47103: critical vulnerability in fgmacedo python-statemachine
Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection
Published · Updated
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.3epss 1.4%
from disclosure to weapon59 days
Published on NVDJun 17
1st PoC+59d
exploitation probability
1.4%top 29% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
fgmacedo · python-statemachinepublic PoCs found — 1
githubgithub.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rcehttps://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection