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CVE-2026-59254

n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b211569acdd194c0f24a595947ce4037151c887907e1aee8f25132d1b6286436
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.27.4","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.27.4","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/affected/1

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.28.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.28.1","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.27.4","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.27.4","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/affected/1
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.28.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.28.1","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-639","description":"Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"GitHub Security Advisory (GHSA-2434-3x6q-8r99)","tags":["vendor-advisory"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/references/0
{"name":"VulnCheck Advisory: n8n - External Secrets Disclosure via Workflow Node Expressions","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8b924202b9cfdc61d95f6ad9d3c6f7d53f69ba58572b3c5805542d5592b030e5 · sha256:66ccda87871c31aa… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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