{"id":"CVE-2026-118642","kind":"vulnerability","aliases":["CVE-2026-118642"],"related":[],"title":"n8n: authenticated members can exfiltrate credentials they lack access to","description":"n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows authenticated members to use inaccessible credentials through inline sub-workflow nodes with non-boolean disabled values. Attackers knowing a credential id can run Execute Workflow nodes in inline JSON mode that skip the permission check and send decrypted credentials to attacker-controlled servers.","summary":"n8n before 1.123.85, 2.43.5, and 2.44.1 has an authorization bypass in inline sub-workflow nodes that skip the credential permission check when the disabled value is non-boolean. An authenticated member who knows a credential id can run an Execute Workflow node in inline JSON mode and send the decrypted credential to a server they control.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["ai-agents","ai-tooling","n8n","self-hosted","workflow-automation"],"not_affected_if":["patched-version","single-user-instance"],"how_to_check":"- Check the installed n8n version with `n8n --version` or the image tag, and compare against `1.123.85`, `2.43.5`, and `2.44.1`.\n- Review which users are members of the instance and whether any hold credentials they should not use.","fix":"- Upgrade n8n to `1.123.85` on the 1.x line, `2.43.5` on the 2.43 line, or `2.44.1` on the 2.44 line.\n- Rotate credentials that may have been reachable by members who could create or edit workflows.","status":"open","published_at":"2026-10-28T19:17:32+00:00","first_seen_at":"2026-10-28T19:34:55+00:00","triaged_at":"2026-10-28T19:36:09+00:00","updated_at":"2026-10-28T19:36:09+00:00","category":"ai-tooling","confidence":0.6,"triage":{"at":"2026-10-28T19:36:09Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade n8n to `1.123.85` on the 1.x line, `2.43.5` on the 2.43 line, or `2.44.1` on the 2.44 line.\n- Rotate credentials that may have been reachable by members who could create or edit workflows.","reach":"network","title":"n8n: authenticated members can exfiltrate credentials they lack access to","impact":"high","summary":"n8n before 1.123.85, 2.43.5, and 2.44.1 has an authorization bypass in inline sub-workflow nodes that skip the credential permission check when the disabled value is non-boolean. An authenticated member who knows a credential id can run an Execute Workflow node in inline JSON mode and send the decrypted credential to a server they control.","category":"ai-tooling","nicknames":[],"who_cares":["n8n","self-hosted","ai-agents","workflow-automation"],"confidence":0.6,"needs_auth":"yes","worst_case":"Member decrypts and exfiltrates credentials they were never granted","analyst_note":"Check the n8n GitHub security advisory for exact affected ranges and whether the default configuration is vulnerable; the NVD entry alone does not confirm it.","how_to_check":"- Check the installed n8n version with `n8n --version` or the image tag, and compare against `1.123.85`, `2.43.5`, and `2.44.1`.\n- Review which users are members of the instance and whether any hold credentials they should not use.","needs_analyst":true,"not_affected_if":["patched-version","single-user-instance"],"who_is_affected":"Self-hosted or cloud n8n instances on the affected versions with more than one authenticated member who can create or edit workflows. An attacker needs a credential id and a member account; instances with a single trusted user or no multi-user workflow editing are less exposed.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000665,"input_tokens":3366,"output_tokens":656,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-118642':12A,15A '-2026':11A,14A '1.123.85':31B,89C '2.43.5':32B,90C '2.44.1':34B,92C 'access':9A 'agent':18B 'ai':17B,20B 'ai-ag':16B 'ai-tool':19B 'allow':99C 'attack':118C,143C 'attacker-control':142C 'authent':2A,60B,100C 'author':37B,95C 'autom':28B 'boolean':58B,115C 'bypass':38B,96C 'check':50B,136C 'contain':93C 'control':86B,144C 'credenti':6A,48B,65B,81B,105C,121C,140C 'cve':10A,13A 'decrypt':80B,139C 'disabl':53B,116C 'execut':70B,125C 'exfiltr':5A 'host':25B 'id':66B,122C 'inaccess':104C 'inlin':40B,74B,107C,129C 'json':75B,130C 'know':63B,119C 'lack':8A 'member':3A,61B,101C 'mode':76B,131C 'n8n':1A,22B,29B,87C 'node':44B,72B,111C,127C 'non':57B,114C 'non-boolean':56B,113C 'permiss':49B,135C 'run':68B,124C 'self':24B 'self-host':23B 'send':78B,138C 'server':84B,145C 'skip':46B,133C 'sub':42B,109C 'sub-workflow':41B,108C 'tool':21B 'use':103C 'valu':54B,117C 'vulner':97C 'workflow':27B,43B,71B,110C,126C 'workflow-autom':26B","nicknames":[],"mitigations":[],"who_affected":"Self-hosted or cloud n8n instances on the affected versions with more than one authenticated member who can create or edit workflows. An attacker needs a credential id and a member account; instances with a single trusted user or no multi-user workflow editing are less exposed.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T19:17:32+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-118642","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118642","severity":null,"published_at":"2026-10-28T19:17:32+00:00","modified_at":"2026-10-28T19:17:32+00:00","first_seen_at":"2026-10-28T19:34:55+00:00","fetched_at":"2026-10-28T19:34:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}