{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39888", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-07T20:32:03.011Z", "datePublished": "2026-04-08T20:41:56.680Z", "dateUpdated": "2026-04-08T20:41:56.680Z"}, "containers": {"cna": {"title": "PraisonAIAgents has a sandbox escape via exception frame traversal in `execute_code` (subprocess mode)", "problemTypes": [{"descriptions": [{"cweId": "CWE-657", "lang": "en", "description": "CWE-657: Violation of Secure Design Principles", "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": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qf73-2hrx-xprp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qf73-2hrx-xprp"}], "affected": [{"vendor": "MervinPraison", "product": "praisonaiagents", "versions": [{"version": "< 1.5.115", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-08T20:41:56.680Z"}, "descriptions": [{"lang": "en", "value": "PraisonAI is a multi-agent teams system. Prior to 1.5.115, execute_code() in praisonaiagents.tools.python_tools defaults to sandbox_mode=\"sandbox\", which runs user code in a subprocess wrapped with a restricted __builtins__ dict and an AST-based blocklist. The AST blocklist embedded inside the subprocess wrapper (blocked_attrs of python_tools.py) contains only 11 attribute names \u2014 a strict subset of the 30+ names blocked in the direct-execution path. The four attributes that form a frame-traversal chain out of the sandbox are all absent from the subprocess list (__traceback__, tb_frame, f_back, and f_builtins). Chaining these attributes through a caught exception exposes the real Python builtins dict of the subprocess wrapper frame, from which exec can be retrieved and called under a non-blocked variable name \u2014 bypassing every remaining security layer. This vulnerability is fixed in 1.5.115."}], "source": {"advisory": "GHSA-qf73-2hrx-xprp", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "PraisonAI is a multi-agent teams system. Prior to 1.5.115, execute_code() in praisonaiagents.tools.python_tools defaults to sandbox_mode=\"sandbox\", which runs user code in a subprocess wrapped with a restricted __builtins__ dict and an AST-based blocklist. The AST blocklist embedded inside the subprocess wrapper (blocked_attrs of python_tools.py) contains only 11 attribute names \u2014 a strict subset of the 30+ names blocked in the direct-execution path. The four attributes that form a frame-traversal chain out of the sandbox are all absent from the subprocess list (__traceback__, tb_frame, f_back, and f_builtins). Chaining these attributes through a caught exception exposes the real Python builtins dict of the subprocess wrapper frame, from which exec can be retrieved and called under a non-blocked variable name \u2014 bypassing every remaining security layer. This vulnerability is fixed in 1.5.115."}], "id": "CVE-2026-39888", "lastModified": "2026-04-08T21:25:14.927", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-08T21:17:00.990", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qf73-2hrx-xprp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-657"}, {"lang": "en", "value": "CWE-693"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}