{"action":"Upgrade n8n to 1.123.32 or later.","affected":[{"fixed":"1.123.32","introduced":"0"},{"fixed":"2.18.1","introduced":"2.18.0"},{"fixed":"2.17.4","introduced":"2.17.0"}],"component":"n8n","cve_ids":["CVE-2026-42235"],"ecosystem":"npm","epss":0.00505,"exploited":false,"fixed_versions":["1.123.32","2.18.1","2.17.4"],"ghsa_id":"GHSA-537j-gqpc-p7fq","id":"tcs_01M5KF2CMAAHCV33TXF5G9TQWN","modified_at":"2026-05-08T01:48:43.684926Z","published_at":"2026-04-29T21:23:04Z","references":["https://osv.dev/vulnerability/GHSA-537j-gqpc-p7fq","https://github.com/n8n-io/n8n/security/advisories/GHSA-537j-gqpc-p7fq","https://nvd.nist.gov/vuln/detail/CVE-2026-42235","https://github.com/n8n-io/n8n"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"GHSA-537j-gqpc-p7fq","url":"https://osv.dev/vulnerability/GHSA-537j-gqpc-p7fq"}],"summary":"n8n Vulnerable to XSS via MCP OAuth client"}