{"cve":{"cve_id":"CVE-2026-46442","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":0.3634,"epss_percentile":0.98366,"epss_as_of":"2026-08-26","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST /api/v1/node-custom-function lacks route-level authorization, allowing any authenticated user or API key to submit arbitrary JavaScript to the Custom JS Function node. When E2B_APIKEY is not configured — the common deployment case — Flowise executes this code inside a NodeVM sandbox. This sandbox can be escaped, allowing an attacker to reach the host process object and execute system commands via child_process. The result is authenticated remote code execution on the Flowise server host. This issue has been patched in version 3.1.2.","published_at":"2026-06-08T15:30:48.999000Z","last_modified_at":"2026-07-23T07:10:00.113000Z","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":9.4,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","cvss_v4_severity":"CRITICAL","ssvc_decision":null,"ssvc_exploitation":"poc","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-94"],"nvd_references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9rvc-vf7m-pgm2","https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2"],"vuln_status":"Analyzed","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":"2026-06-24T00:09:39.878444Z","updated_at":"2026-07-24T09:11:59.979098Z"},"effective_severity":"CRITICAL","badges":["poc"],"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":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"H","value_label":"High"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"H","value_label":"High"},{"metric":"SA","name":"Availability (Subsequent System)","value":"H","value_label":"High"}]},"affected":[{"vendor_slug":"flowiseai","vendor_name":"flowiseai","product_slug":"flowise","product_name":"flowise","version_start":"< 3.1.2","version_start_inclusive":true,"version_end":"< 3.1.2","version_end_inclusive":true,"cpe23_uri":"cve5:flowiseai:flowise:< 3.1.2:< 3.1.2"},{"vendor_slug":"flowiseai","vendor_name":"flowiseai","product_slug":"flowise","product_name":"flowise","version_start":null,"version_start_inclusive":null,"version_end":"3.1.2","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-46442.yaml","title":"Flowise < 3.1.2 - node-custom-function Unauthorized RCE","author":"DhiyaneshDk,princechaddha","disclosed_at":null}],"news":[],"references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9rvc-vf7m-pgm2","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-08T15:30:48.999000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:54:49.174395Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:49.174395Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:49.174395Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"poc_available","at":"2026-07-21T06:39:10.175888Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-07-24T09:11:59.979098Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-07-24T09:11:59.979098Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-07-24T09:11:59.979098Z","label":"CVSS score revised","source":"nvd"}]}