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CVE-2026-59208

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacker with a valid token from one trusted issuer and a sub matching a victim under another issuer to authenticate as that victim. This issue is fixed in versions 2.27.4 and 2.28.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c20e119e432d565f220a01477accaa1e0466d0e502d73b94028c17eaabefbf09
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n8n","vendor":"n8n-io","versions":[{"status":"affected","version":">= 2.28.0, < 2.28.1"},{"status":"affected","version":"< 2.27.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.6,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/references/1
{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/references/2
{"name":"https://github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3066c3ff983d7a6319cd1f9ad99edbafe9f9d67a2d6641ada181d02fa0472d74 · sha256:6e9a0cbcdf1703f6… · /containers/cna/references/0

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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