{"apiVersion":"1.0","identifier":"CVE-2026-77073","description":"n8n versions before 2.34.1 contain a credential validation bypass in the MCP create_workflow_from_code tool when authentication type is set to an expression. Attackers with a valid MCP Bearer API key and knowledge of a target credential ID can persist unauthorized cross-project credential references on workflows in different projects.","publishedAt":"2026-08-20T12:16:38","lastModifiedAt":"2026-08-25T15:16:43","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77073","cvssScore":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/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","epssProbability":0.00296,"riskScore":0.54,"affectedProduct":"n8n","affectedVersions":"<2.34.1","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77073","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77073","en":"https://www.redsauce.net/en/cves/CVE-2026-77073","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77073","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77073","de":"https://www.redsauce.net/de/cves/CVE-2026-77073","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77073","el":"https://www.redsauce.net/el/cves/CVE-2026-77073"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77073"}}