{"id":"CVE-2026-54307","title":"n8n: Credential Exfiltration via Permission Bypass","summary":"n8n: Credential Exfiltration via Permission Bypass","severity":"high","cvss":9.6,"cwe":["CWE-863"],"vendor":"n8n","product":"n8n","ecosystem":"npm","affected":["n8n < 1.123.55","n8n >= 2.26.0, < 2.26.2","n8n >= 2.0.0-rc.0, < 2.25.7"],"patched":["n8n 1.123.55","n8n 2.26.2","n8n 2.25.7"],"published":"2026-06-16","updated":"2026-06-16","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-pmqw-72cg-wx85","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85"},{"url":"https://github.com/advisories/GHSA-pmqw-72cg-wx85"}],"tags":["ghsa","npm"],"epss":0.00386,"epssPercentile":0.32514,"ingestedAt":"2026-06-29T14:31:47.471Z","slug":"CVE-2026-54307","body":"## Overview\n\n## Impact\nA member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access.\n\nThis issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.55, 2.25.7, and 2.26.2. 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- Audit shared workflows for unexpected credential references or recent modifications.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n\n**Credits:** Momen Elkhouli\n\n## Affected packages\n\n- `n8n < 1.123.55`\n- `n8n >= 2.26.0, < 2.26.2`\n- `n8n >= 2.0.0-rc.0, < 2.25.7`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `n8n 1.123.55`\n- `n8n 2.26.2`\n- `n8n 2.25.7`","depth":"twilight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}