{"id":"CVE-2026-110853","title":"n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode","summary":"n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier…","severity":"high","cvss":7.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","cwe":["CWE-639"],"vendor":"n8n-io","product":"n8n","affected":["n8n < 1.123.83"],"published":"2026-10-14","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:17:33.900","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110853","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-866p-xg8v-g2q7","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.83-authorization-bypass-via-execute-sub-workflow-inline-json","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00228,"epssPercentile":0.13543,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T16:31:16.927726Z"},"cvssSource":"cna","ingestedAt":"2026-10-15T00:02:07.179Z","slug":"CVE-2026-110853","body":"## Overview\n\nn8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier to resolve credentials from projects they do not belong to and modify another workflow's static data and error-workflow dispatch.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221991,"id":"CVE-2026-110853","ts":1792039699913,"field":"cvss","old":null,"new":"7.1"},{"seq":221990,"id":"CVE-2026-110853","ts":1792039699913,"field":"severity","old":"none","new":"high"}]}