Authorization bypass in n8n lets members use inaccessible credentials
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
n8n before 1.123.85, from 2.0.0 before 2.43.5, and from 2.44.0 before 2.44.1 are affected. An authorization bypass (CWE-863) lets member users use credentials they cannot access by omitting default node parameters. An authenticated member can save and run workflows that skip credential checks, causing decrypted credential values to be sent to attacker-chosen destinations.
Written with Claude Haiku 5.5 from the sources below · 2026-11-02
Description from the CNA
n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows member users to use credentials they cannot access by omitting default node parameters. Attackers can save and run workflows where pre-execution checks skip credential slots, causing decrypted credential values to be sent to attacker-chosen destinations.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Update n8n to 1.123.85, 2.43.5, or 2.44.1, matching the release line in use.
Written with Claude Haiku 5.5 from the sources below · 2026-11-02
- Fix · CNA n8n (n8n-io) Fixed in 1.123.85
- Fix · CNA n8n (n8n-io) Fixed in 2.44.1
- Fix · CNA n8n (n8n-io) Fixed in 2.43.5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
n8n-io n8n 2.43.5, 2.44.1
11 records Highest priority Priority LOW 11 LOW
Other records, highest priority first
- TI-2026-82163 Authorization bypass in n8n exposes Data Table rows of all projectsPriority LOW 39
- TI-2026-82162 Stored cross-site scripting in n8n webhook responsesPriority LOW 38
- TI-2026-82160 Regular expression DoS in n8n Read/Write Files nodePriority LOW 31
- Release ·
n8n-io n8n 1.123.85
10 records Highest priority Priority LOW 10 LOW
Other records, highest priority first
- TI-2026-82162 Stored cross-site scripting in n8n webhook responsesPriority LOW 38
- TI-2026-82160 Regular expression DoS in n8n Read/Write Files nodePriority LOW 31
- TI-2026-82159 Filter injection in n8n Quick Base node Where parameterPriority LOW 30
Timeline
- 2026-10-28 Threatist record created from CVE-2026-118676
- 2026-10-28 Alias added: GHSA-8gwv-55hj-rf7m
- 2026-11-02 CISA SSVC decision points changed
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-2026-82991 Code execution in n8n via deprecated Function nodes CVSS 4.0HIGH 8.7
- TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
Sources
- CVE-2026-118676 · CVE Program
- CVE-2026-118676 · NVD
- FIRST EPSS
- GHSA-8gwv-55hj-rf7m · GitHub Advisory Database · CC BY 4.0
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