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CVE-2026-55608

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.57.4, multi-tenant HTTP mode with ENABLE_MULTI_TENANT=true could allow an authenticated tenant to access default-scope workflow_versions backups instead of being confined to the tenant scope, exposing or deleting workflow-version backups from prior single-tenant deployments or migrations. This issue is fixed in version 2.57.4.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:952402b088cb47c1567f8a55529b25cf01db644f415efc3f1625c50414343c3b
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-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"n8n-mcp","vendor":"czlonkowski","versions":[{"status":"affected","version":"< 2.57.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.2,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/czlonkowski/n8n-mcp/commit/1f42899749ed0c584fb6b4fd63d75233c3edee59","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/commit/1f42899749ed0c584fb6b4fd63d75233c3edee59"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/references/1
{"name":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.57.4","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.57.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /containers/cna/references/2
{"name":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-2cf7-hpwf-47h9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-2cf7-hpwf-47h9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3df10291184ed2a04f49f6de391bb68c3b540c20e8feaae5f167b9b958649599 · sha256:04ce17e1e6cd43e4… · /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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