{"id":"CVE-2026-59209","aliases":["GHSA-q3j5-8vrg-4p9q"],"title":"n8n: Shared Credential Header Leak via HTTP Request Pagination Expression","summary":"n8n: Shared Credential Header Leak via HTTP Request Pagination Expression","severity":"high","cwe":["CWE-200"],"vendor":"n8n","product":"n8n","ecosystem":"npm","affected":["n8n < 1.123.61","n8n >= 2.28.0, < 2.28.1","n8n >= 2.0.0-rc.0, < 2.27.4"],"patched":["n8n 1.123.61","n8n 2.28.1","n8n 2.27.4"],"published":"2026-07-22","updated":"2026-07-22","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-q3j5-8vrg-4p9q","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-q3j5-8vrg-4p9q"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59209"},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4"},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1"},{"url":"https://github.com/advisories/GHSA-q3j5-8vrg-4p9q"}],"tags":["ghsa","npm"],"epss":0.00402,"epssPercentile":0.34213,"ingestedAt":"2026-07-22T22:06:57.543Z","slug":"CVE-2026-59209","body":"## Overview\n\n## Impact\nAn authenticated member with use-only editor access to a shared workflow could read credential-populated headers exposed via the `$request` object inside an HTTP Request node's pagination expression. When an HTTP Header Auth credential is applied to a paginated request, the secret is present in `$request.headers` when pagination expressions are evaluated. A user-controlled expression could read that secret, copy it into item data, and exfiltrate it through a later HTTP Request node, bypassing credential domain restrictions, since the secret leaves via item data rather than the credential's own request mechanism.\n\nThis issue only affects instances with `N8N_EXPRESSION_ENGINE=vm` set, where paginated HTTP Request workflows using shared credentials are accessible to non-owner users.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.61, 2.27.4, and 2.28.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict workflow sharing to fully trusted users only.\n- Avoid sharing credentials with use-only access to untrusted users on workflows that use HTTP Request nodes with pagination enabled.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n## Affected packages\n\n- `n8n < 1.123.61`\n- `n8n >= 2.28.0, < 2.28.1`\n- `n8n >= 2.0.0-rc.0, < 2.27.4`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `n8n 1.123.61`\n- `n8n 2.28.1`\n- `n8n 2.27.4`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}