n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-284.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| n8n | n8n | before 1.123.55; 2.0.0-rc.0 to before 2.25.7; 2.26.0 to before 2.26.2 | 1.123.55, 2.25.7, 2.26.2 | Patch available | CNA |
| — | n8n (npm) | before 1.123.55 | 1.123.55 | Patch available | GHSA-2j5h-858j-5mpf |
| — | n8n (npm) | 2.26.0 to before 2.26.2 | 2.26.2 | Patch available | GHSA-2j5h-858j-5mpf |
| — | n8n (npm) | 2.0.0-rc.0 to before 2.25.7 | 2.25.7 | Patch available | GHSA-2j5h-858j-5mpf |
- n8n Vendorn8n Affected before 1.123.55; 2.0.0-rc.0 to before 2.25.7; 2.26.0 to before 2.26.2 Fixed in 1.123.55, 2.25.7, 2.26.2 Patch available CNA
- n8n (npm) Vendor— Affected before 1.123.55 Fixed in 1.123.55 Patch available GHSA-2j5h-858j-5mpf
- n8n (npm) Vendor— Affected 2.26.0 to before 2.26.2 Fixed in 2.26.2 Patch available GHSA-2j5h-858j-5mpf
- n8n (npm) Vendor— Affected 2.0.0-rc.0 to before 2.25.7 Fixed in 2.25.7 Patch available GHSA-2j5h-858j-5mpf
Remediation
- Fix · CNA n8n (n8n-io) Fixed in 1.123.55, 2.25.7, 2.26.2
- Fix · GHSA-2j5h-858j-5mpf n8n (npm) Fixed in 1.123.55 Advisory →
- Fix · GHSA-2j5h-858j-5mpf n8n (npm) Fixed in 2.26.2 Advisory →
- Fix · GHSA-2j5h-858j-5mpf n8n (npm) Fixed in 2.25.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54305
- 2026-10-03 Alias added: GHSA-2j5h-858j-5mpf
References
More N8n vulnerabilities
- TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
- TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
- TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
- TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
- TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
- TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8
Sources
- CVE-2026-54305 · CVE Program
- CVE-2026-54305 · NVD
- FIRST EPSS
- GHSA-2j5h-858j-5mpf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences