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CVE-2026-56776

n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/test-runs/new endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a workflow can trigger a real evaluation test run, causing the workflow to execute via the internal workflow runner and resulting in unintended outbound API calls, data mutations, or other side effects in connected downstream systems. Th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fac89f5e30d87aa7110f42fc5bfbbffa44c816a4f4dae115eadb7511f50953bd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"1.123.55","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.123.55","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/affected/0

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.26.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.26.2","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/affected/1

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.25.7","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.25.7","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/affected/2
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

3 source assertions
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"1.123.55","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.123.55","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/affected/0
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.26.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.26.2","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/affected/1
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n","versions":[{"lessThan":"2.25.7","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.25.7","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/affected/2

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-863","description":"Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"GitHub Security Advisory (GHSA-hv7x-3x78-gx53)","tags":["vendor-advisory"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-hv7x-3x78-gx53"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /containers/cna/references/0
{"name":"VulnCheck Advisory: n8n - Incorrect OAuth Scope Validation in Workflow Test Run Endpoint","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/n8n-incorrect-oauth-scope-validation-in-workflow-test-run-endpoint"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2cf570eaa22340a5350c0e5979ba1a30efe970b4a7d42b1e9269770d43cf0286 · sha256:4d7bfb4b11308e42… · /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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