{"id":"CVE-2026-77076","aliases":["GHSA-9fqj-7wc5-cwhx"],"url":"https://o3.security/vulnerability/CVE-2026-77076","summary":"n8n before 1.123.69 Credential Leak via GraphQL Node Error","details":"n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain an information disclosure vulnerability in the GraphQL node. When a GraphQL request fails at the connection level, the node re-throws the underlying HTTP client error unchanged instead of wrapping it in n8n's standard error type. That error contains the live request's headers, including a decrypted credential secret, which the execution engine persists verbatim. Any authenticated user able to read the resulting execution can retrieve the decrypted credential secret from the stored run data.","published":"2026-08-20T11:21:10.251Z","modified":"2026-08-22T03:58:13.727224624Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77076.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-9fqj-7wc5-cwhx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77076"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-before-credential-leak-via-graphql-node-error"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-22T03:58:13.727224624Z"}}