Vulnerability-Lookup

CVE-2026-47103 (GCVE-0-2026-47103)

Vulnerability from cvelistv5 – Published: 2026-06-17 14:32 – Updated: 2026-10-08 15:22 X_Open Source

Title

Python StateMachine 3.0.0 < 3.2.0 RCE via SCXML eval() Injection

Summary

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.

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-18 14:30 UTC

CWE

CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6182 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/SaiTeja-Erukude/CVE-2026-47103…	technical-descriptionexploit
https://github.com/fgmacedo/python-statemachine/r…	release-notes
https://github.com/fgmacedo/python-statemachine/s…	vendor-advisory
https://www.vulncheck.com/advisories/python-state…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
fgmacedo	python-statemachine	Affected: 3.0.0 , < 3.2.0 (semver) cpe:2.3:a:fgmacedo:python_statemachine::::::python::*

Date Public

2026-06-16 00:00

Credits

Sai Teja Erukude VulnCheck

Show details on NVD website

JSON

To clipboard

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        "dateReserved": "2026-05-18T19:22:26.748Z",
        "dateUpdated": "2026-10-08T15:22:56.368Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-47103

Vulnerability from fkie_nvd - Published: 2026-06-17 15:16 - Updated: 2026-10-08 16:17

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
disclosure@vulncheck.com	https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce
disclosure@vulncheck.com	https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0	Release Notes
disclosure@vulncheck.com	https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8	Exploit, Vendor Advisory
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection	Third Party Advisory, VDB Entry
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	fgmacedo	python_statemachine	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "affected",
          "packageURL": "pkg:pypi/python-statemachine",
          "product": "python-statemachine",
          "repo": "https://github.com/fgmacedo/python-statemachine",
          "vendor": "fgmacedo",
          "versions": [
            {
              "lessThan": "3.2.0",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fgmacedo:python_statemachine:*:*:*:*:*:python:*:*",
              "matchCriteriaId": "28D9A7BC-8521-4F47-ABB8-5A04FE0372FB",
              "versionEndExcluding": "3.2.0",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 `\u003cdata expr=\"...\"\u003e` attributes evaluated unsafely. The SCXMLProcessor passes attacker-controlled expression strings through a call chain ending in Python\u0027s built-in eval() without sandboxing, enabling arbitrary code execution in the context of the hosting process."
    }
  ],
  "id": "CVE-2026-47103",
  "lastModified": "2026-10-08T16:17:17.513",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47103",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-18T14:30:49.802580Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-17T15:16:58.460",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/SaiTeja-Erukude/CVE-2026-47103-python-statemachine-rce"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-95"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-V4JC-PM6R-3VJ8

Vulnerability from github – Published: 2026-06-18 14:28 – Updated: 2026-06-18 14:28

Summary

python-statemachine SCXML <data expr> Eval Injection

Details

Summary

python-statemachine 3.1.2 evaluates <data expr="..."> attributes in SCXML documents using Python's eval(). Any application that passes attacker-controlled SCXML content to SCXMLProcessor is vulnerable to arbitrary code execution in the context of the hosting process.

Details

SCXMLProcessor.parse_scxml_file() processes SCXML documents and evaluates <data> element expr attributes via the following call chain:

SCXMLProcessor.parse_scxml_file()
SCXMLProcessor.process_definition()
create_datamodel_action_callable()
_create_dataitem_callable()
_eval()
eval()

_eval() calls Python's built-in eval() directly on the expression string without sandboxing or restriction.

PoC

1. Install:
   pip install python-statemachine==3.1.2

2. Create an SCXML file containing:
   <data id="x" expr="__import__('pathlib').Path('marker.txt').write_text('pwned')"/>

3. Run:
   SCXMLProcessor.parse_scxml_file(DATA_EXPR_CHART)
   SCXMLProcessor.start()

4. During start(), <data expr> reaches _eval(), which calls eval().

5. Result:
   data_marker_before_start: False
   data_marker_after_start: True
   success: True

Impact

This is an eval injection vulnerability (CWE-95). Remote or local code execution depending on whether the consuming application accepts SCXML content from remote users, uploaded files, configuration, plugins, or other untrusted sources.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "python-statemachine"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-47103"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-95"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-18T14:28:02Z",
    "nvd_published_at": "2026-06-17T15:16:58Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\n\npython-statemachine 3.1.2 evaluates `\u003cdata expr=\"...\"\u003e` attributes in SCXML documents using Python\u0027s `eval()`. Any application that passes attacker-controlled SCXML content to `SCXMLProcessor` is vulnerable to arbitrary code execution in the context of the hosting process.\n\n### Details\n\n`SCXMLProcessor.parse_scxml_file()` processes SCXML documents and evaluates `\u003cdata\u003e` element `expr` attributes via the following call chain:\n\n```\nSCXMLProcessor.parse_scxml_file()\nSCXMLProcessor.process_definition()\ncreate_datamodel_action_callable()\n_create_dataitem_callable()\n_eval()\neval()\n```\n\n`_eval()` calls Python\u0027s built-in `eval()` directly on the expression string without sandboxing or restriction.\n\n### PoC\n\n```\n1. Install:\n   pip install python-statemachine==3.1.2\n\n2. Create an SCXML file containing:\n   \u003cdata id=\"x\" expr=\"__import__(\u0027pathlib\u0027).Path(\u0027marker.txt\u0027).write_text(\u0027pwned\u0027)\"/\u003e\n\n3. Run:\n   SCXMLProcessor.parse_scxml_file(DATA_EXPR_CHART)\n   SCXMLProcessor.start()\n\n4. During start(), \u003cdata expr\u003e reaches _eval(), which calls eval().\n\n5. Result:\n   data_marker_before_start: False\n   data_marker_after_start: True\n   success: True\n```\n\n### Impact\n\nThis is an eval injection vulnerability (CWE-95). Remote or local code execution depending on whether the consuming application accepts SCXML content from remote users, uploaded files, configuration, plugins, or other untrusted sources.",
  "id": "GHSA-v4jc-pm6r-3vj8",
  "modified": "2026-06-18T14:28:02Z",
  "published": "2026-06-18T14:28:02Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47103"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/fgmacedo/python-statemachine"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "python-statemachine SCXML \u003cdata expr\u003e Eval Injection"
}

PYSEC-2026-506

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:23

Details

Summary

Details

SCXMLProcessor.parse_scxml_file() processes SCXML documents and evaluates <data> element expr attributes via the following call chain:

SCXMLProcessor.parse_scxml_file()
SCXMLProcessor.process_definition()
 create_datamodel_action_callable()
_create_dataitem_callable()
_eval()
eval()
 ```

`_eval()` calls Python's built-in `eval()` directly on the expression string without sandboxing or restriction.

### PoC

Install: pip install python-statemachine==3.1.2
Create an SCXML file containing:
Run: SCXMLProcessor.parse_scxml_file(DATA_EXPR_CHART) SCXMLProcessor.start()
During start(), reaches _eval(), which calls eval().
Result: data_marker_before_start: False data_marker_after_start: True success: True ```

Impact

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    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

Impacted products

Name	purl
python-statemachine	pkg:pypi/python-statemachine

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "python-statemachine",
        "purl": "pkg:pypi/python-statemachine"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.0",
        "3.1.0",
        "3.1.1",
        "3.1.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-47103",
    "GHSA-v4jc-pm6r-3vj8"
  ],
  "details": "### Summary\n\npython-statemachine 3.1.2 evaluates `\u003cdata expr=\"...\"\u003e` attributes in SCXML documents using Python\u0027s `eval()`. Any application that passes attacker-controlled SCXML content to `SCXMLProcessor` is vulnerable to arbitrary code execution in the context of the hosting process.\n\n### Details\n\n`SCXMLProcessor.parse_scxml_file()` processes SCXML documents and evaluates `\u003cdata\u003e` element `expr` attributes via the following call chain:\n\n```\nSCXMLProcessor.parse_scxml_file()\nSCXMLProcessor.process_definition()\n create_datamodel_action_callable()\n_create_dataitem_callable()\n_eval()\neval()\n ```\n\n`_eval()` calls Python\u0027s built-in `eval()` directly on the expression string without sandboxing or restriction.\n\n### PoC\n\n```\n1. Install:\n   pip install python-statemachine==3.1.2\n\n2. Create an SCXML file containing:\n   \u003cdata id=\"x\" expr=\"__import__(\u0027pathlib\u0027).Path(\u0027marker.txt\u0027).write_text(\u0027pwned\u0027)\"/\u003e\n\n 3. Run:\n   SCXMLProcessor.parse_scxml_file(DATA_EXPR_CHART)\n   SCXMLProcessor.start()\n \n4. During start(), \u003cdata expr\u003e reaches _eval(), which calls eval().\n\n5. Result:\n   data_marker_before_start: False\n   data_marker_after_start: True\n   success: True\n```\n\n### Impact\n\nThis is an eval injection vulnerability (CWE-95). Remote or local code execution depending on whether the consuming application accepts SCXML content from remote users, uploaded files, configuration, plugins, or other untrusted sources.",
  "id": "PYSEC-2026-506",
  "modified": "2026-07-01T20:23:03.302193Z",
  "published": "2026-06-29T11:50:52.079977Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/fgmacedo/python-statemachine/security/advisories/GHSA-v4jc-pm6r-3vj8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47103"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/fgmacedo/python-statemachine"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fgmacedo/python-statemachine/releases/tag/v3.2.0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/python-statemachine-rce-via-scxml-eval-injection"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/python-statemachine"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-v4jc-pm6r-3vj8"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "python-statemachine SCXML \u003cdata expr\u003e Eval Injection"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-47103 (GCVE-0-2026-47103)

FKIE_CVE-2026-47103

GHSA-V4JC-PM6R-3VJ8

Summary

Details

PoC

Impact

PYSEC-2026-506

Summary

Details

Impact

Tags

Sightings

Nomenclature

Vulnerability timeline

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