SSRF (Server-Side Request Forgery) in n8n (CVE-2026-86074)
Summary
SSRF in n8n (CVE-2026-86074). Confidential information can be exposed externally. Exploitable via N8N_ENABLED_MODULES. Mitigation: upgrade to 2.37.7 or later.
Original description
The description as published by the source.
Impact
Instance AI credential setup accepted a credential test/verification URL without checking it matched the workflow node's origin. Exfiltration required the user to actively inject an attacker-controlled URL into the setup flow. The patch derives the credential destination from the node's own URL and confines authenticated requests, redirects and probes to that origin.
Patches
The issue has been fixed in n8n versions 2.38.2 and 2.37.7. Users should upgrade to one of these versions or later to remediate the vulnerability.
Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Disable the Instance AI module by removing
instance-aifrom theN8N_ENABLED_MODULESenvironment variable if it is not required. - Restrict n8n instance access to fully trusted users only.
- Rotate any third-party API credentials that were set up using the Instance AI credential-setup flow on affected versions.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-86074 has been found in n8n.
Attackers can target a specific entry point like N8N_ENABLED_MODULES over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 7.1/10.
What to do: upgrade n8n to 2.37.7 or later.
If unsure, ask your IT team or search "n8n CVE-2026-86074" on the vendor's site.
CVE-2026-86074 (n8n) — CWE-918 / CVSS v3 7.1
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: N8N_ENABLED_MODULES
Patched: 2.37.7 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
SSRF (CWE-918) exists in n8n. Attackers reach the vulnerable code path via N8N_ENABLED_MODULES without authentication.
Check the vendor advisory for the affected versions of n8n. Attack surface: N8N_ENABLED_MODULES.
Severity: High (CVSS 7.1/10). Confidential information can be exposed externally.
Update to 2.37.7.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'n8n' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'n8n' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
n8nを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade n8n to 2.37.7ステージング環境で 2.37.7 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- web github.com
- web github.com
- web github.com
- web nvd.nist.gov
- web github.com