{"cve":{"cve_id":"CVE-2026-47392","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00884,"epss_percentile":0.56577,"epss_as_of":"2026-08-26","description":"PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `execute_code()` in `praisonaiagents/tools/python_tools.py` (v1.6.37, subprocess sandbox mode) can be fully bypassed using `print.__self__` to retrieve the real Python `builtins` module, from which `__import__` can be extracted via `vars()` and runtime string construction. This achieves arbitrary OS command execution on the host, completely defeating the sandbox. This is a novel bypass that survives all patches for CVE-2026-39888 (frame traversal), CVE-2026-34938 (str subclass), and CVE-2026-40158 (`type.__getattribute__` trampoline). PraisonAI version 4.6.40 and praisonaiagents version 1.6.40 contain an updated fix.","published_at":"2026-07-21T15:27:16.557000Z","last_modified_at":"2026-07-21T18:59:43.940000Z","cvss_v3_score":9.9,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"poc","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-184","CWE-693"],"nvd_references":["https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4mr5-g6f9-cfrh","https://github.com/MervinPraison/PraisonAI/pull/1684","https://github.com/MervinPraison/PraisonAI/commit/b0d8f777528f3253a0cfb0a3ef65455da6ae32f6"],"vuln_status":"Deferred","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-07-21T17:41:10.178890Z","updated_at":"2026-07-21T22:30:37.370341Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"mervinpraison","vendor_name":"MervinPraison","product_slug":"1.6.40","product_name":"< 1.6.40","version_start":"praisonaiagents","version_start_inclusive":true,"version_end":"praisonaiagents","version_end_inclusive":true,"cpe23_uri":"cve5:mervinpraison:1.6.40:praisonaiagents:praisonaiagents"},{"vendor_slug":"mervinpraison","vendor_name":"MervinPraison","product_slug":"praisonai","product_name":"PraisonAI","version_start":"< 4.6.40","version_start_inclusive":true,"version_end":"< 4.6.40","version_end_inclusive":true,"cpe23_uri":"cve5:mervinpraison:praisonai:< 4.6.40:< 4.6.40"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4mr5-g6f9-cfrh","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/MervinPraison/PraisonAI/pull/1684","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MervinPraison/PraisonAI/commit/b0d8f777528f3253a0cfb0a3ef65455da6ae32f6","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-07-21T15:27:16.557000Z","label":"CVE published","source":null}]}