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CVE-2026-44694

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. From version 2.18.7 to before version 2.50.2, there is an authenticated server-side request forgery vulnerability affecting the webhook trigger tools, the n8n API client (N8N_API_URL), and per-request URLs supplied via the x-n8n-url header in multi-tenant HTTP mode. This issue has been patched in version 2.50.2.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f29ab8bf58290f48cf6cec2a4075ddc7e7bdbcfcb04d78f56d0a0e754095bfd8
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-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"n8n-mcp","vendor":"czlonkowski","versions":[{"status":"affected","version":">= 2.18.7, < 2.50.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.2,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/references/1
{"name":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /containers/cna/references/2
{"name":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e01d55c05e234860e1b88386efd36fffa84313451aaef68dc4fae526a1f3e4b9 · sha256:4b895366c02dd4b6… · /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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