VIR Vulnerability Intelligence Relay

CVE-2026-42449

high
Published 2026-05-07 · Modified 2026-05-11
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
8.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
8.5

Description

n8n-mcp's IPv4-mapped IPv6 addresses bypass SSRF protection in validateUrlSync(), enabling full SSRF for SDK embedders

Predictions

Exploit likelihood
90%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact
EcosystemPackageVulnerableFixed
npm npmn8n-mcp>=2.47.4,<2.47.142.47.14
npm NPMn8n-mcp>= 2.47.4, < 2.47.142.47.14

Application impact
VendorProductVersionsFixed
n8n-mcpn8n-mcp{"startIncluding":"2.47.4","endExcluding":"2.47.14"}2.47.14

References

CWEs

CWE-918

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.