CVE Explorer

CVE-2026-54052

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.56.1, in HTTP mode with multi-tenancy enabled through ENABLE_MULTI_TENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an authenticated tenant to read workflow version snapshots belonging to other tenants and delete or destroy other tenants' stored backups, including full node definitions, credential references, and authori

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fbc06408f7d2f82522b3b10a9adb2ea97dc42d282eb7ca653f359714f68ad3ab

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"product":"n8n-mcp","vendor":"czlonkowski","versions":[{"status":"affected","version":"< 2.56.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.56.1","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.56.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /containers/cna/references/1

{"name":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-j6r7-6fhx-77wx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-j6r7-6fhx-77wx"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2602283f68caab890e0f4e2e7c86cb009ee6c93c574f27948416bc153aa4acc6 · sha256:e69165e58e54d306… · /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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