{"id":"CVE-2026-103251","title":"n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments","summary":"n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments. Attackers with Redis write access c…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-862"],"vendor":"n8n-io","product":"n8n","affected":["n8n < 1.123.80","n8n >= 2.0.0 < 2.39.6","n8n >= 2.40.0 < 2.40.1"],"published":"2026-10-01","updated":"2026-10-01","sourceUpdated":"2026-10-01T11:17:19.103","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103251","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-fmmv-p585-7c8x","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-package-install-validation-bypass-via-pubsub","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-01T11:42:53.800Z","slug":"CVE-2026-103251","body":"## Overview\n\nn8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments. Attackers with Redis write access can bypass name validation, permission checks, checksum verification, and npm safety checks to install arbitrary npm packages across all cluster instances without authentication.\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":[]}