Information Disclosure in n8n (CVE-2026-54305)
Summary
Vulnerability in n8n (CVE-2026-54305). Confidential information can be exposed externally. Exploitable via N8N_ENV_FEAT_DYNAMIC_CREDENTIALS. Mitigation: upgrade to 2.25.7 or later.
Original description
The description as published by the source.
n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, three EE endpoints used by the Dynamic Credentials feature accepted any authenticated n8n session without performing per-resource ownership or scope checks on the target workflow or credential. An authenticated user with no project membership or credential sharing relationship could enumerate credential identifiers, names, and types referenced by any private workflow in the instance, initiate an OAuth authorization flow against another user's credential to overwrite its stored tokens with tokens bound to an account they control, or revoke another user's stored credential tokens entirely. Workflows relying on a hijacked credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of integrations. Token revocation would break affected workflows. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.
Source: GitHub Security Advisories (Global) 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-2026-54305 has been found in n8n.
Attackers can target a specific entry point like N8N_ENV_FEAT_DYNAMIC_CREDENTIALS over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 9.9/10.
What to do: upgrade n8n to 2.25.7 or later.
If unsure, ask your IT team or search "n8n CVE-2026-54305" on the vendor's site.
CVE-2026-54305 (n8n) — CWE-200 / CVSS v3 9.9
Attack vector: remote (network-reachable) / no user interaction
Attack surface: N8N_ENV_FEAT_DYNAMIC_CREDENTIALS
Patched: 2.25.7 — 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.
Information disclosure (CWE-200) exists in n8n. Attackers reach the vulnerable code path via N8N_ENV_FEAT_DYNAMIC_CREDENTIALS.
Check the vendor advisory for the affected versions of n8n. Attack surface: N8N_ENV_FEAT_DYNAMIC_CREDENTIALS.
Severity: Critical (CVSS 9.9/10). Confidential information can be exposed externally.
Update to 2.25.7.
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
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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 2.25.7ステージング環境で 2.25.7 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
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- web github.com