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CVE-2026-65014

n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${restEndpoint}/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The impact is limited to disrupting in-progress test sessions; production webhooks, persistent workflow state, and stored data are not affected.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6556839b0e45311cf897a4ee64636d9c546986c08b6c024bc38c6eb3d651e590
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-io","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:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/affected/1

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"2.28.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.28.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","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:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/affected/1
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"2.28.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.28.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"GitHub Security Advisory (GHSA-33q9-f52j-gc75)","tags":["vendor-advisory"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /containers/cna/references/0
{"name":"VulnCheck Advisory: n8n before 2.28.0 Authentication Bypass via test-webhook","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c7c6d5a0e65b85c492630279b8560dd6904f641d2c9384e4931f2350a64ca4b9 · sha256:106e1adf9dd95e02… · /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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