{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55376", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T18:57:40.181Z", "datePublished": "2026-10-13T15:12:49.604Z", "dateUpdated": "2026-10-13T15:12:49.604Z"}, "containers": {"cna": {"title": "heym Python Tool Sandbox Escape", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-693", "lang": "en", "description": "CWE-693: Protection Mechanism Failure", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/heymrun/heym/security/advisories/GHSA-wcgw-9hfw-f6f2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/heymrun/heym/security/advisories/GHSA-wcgw-9hfw-f6f2"}, {"name": "https://github.com/heymrun/heym/commit/b36d795c6ea841b8f1b511a0952e274487ee4ef3", "tags": ["x_refsource_MISC"], "url": "https://github.com/heymrun/heym/commit/b36d795c6ea841b8f1b511a0952e274487ee4ef3"}, {"name": "https://github.com/heymrun/heym/releases/tag/v0.0.40", "tags": ["x_refsource_MISC"], "url": "https://github.com/heymrun/heym/releases/tag/v0.0.40"}], "affected": [{"vendor": "heymrun", "product": "heym", "versions": [{"version": "< 0.0.40", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-13T15:12:49.604Z"}, "descriptions": [{"lang": "en", "value": "Heym builds and runs agentic systems and business-process automations on self-hosted infrastructure. Prior to 0.0.40, an authenticated user who can create or edit a workflow with an Agent custom Python tool can bypass the blacklist-based sandbox in backend/app/services/python_tool_executor.py because allowed standard-library modules expose operating-system, process, and filesystem capabilities through public attributes that pass _safe_import() and _validate_code_safety(). The runner then executes the supplied tool with exec(), permitting commands and file operations as the backend application user; self-registration affects reachability, but portal triggering alone does not grant code control. This issue is fixed in 0.0.40."}], "source": {"advisory": "GHSA-wcgw-9hfw-f6f2", "discovery": "UNKNOWN"}}}}

{}

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