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TI-2026-82162 Aliases CVE-2026-118648GHSA-j6xc-9gw8-942r

Stored cross-site scripting in n8n webhook responses

Priority LOW 38CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

n8n before 1.123.85, from 2.0.0 before 2.43.5, and from 2.44.0 before 2.44.1 is affected. Some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy, which allows stored cross-site scripting (CWE-79). An authenticated member who can create and activate workflows can serve HTML that runs on the n8n origin and acts with the session of any user who opens the webhook URL.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy. Authenticated members who can create and activate workflows can serve HTML that runs on the n8n origin, letting scripts act with the session of users who open the webhook URL.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.85, 2.44.1, 2.43.5

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

VendorProductAffected versionsFixed inStatusSource
n8nn8nbefore 1.123.851.123.85Patch availableCNA
n8nn8n2.44.0 to before 2.44.12.44.1Patch availableCNA
n8nn8n2.0.0 to before 2.43.52.43.5Patch availableCNA
  • n8n Vendorn8n Affected before 1.123.85 Fixed in 1.123.85 Patch available CNA
  • n8n Vendorn8n Affected 2.44.0 to before 2.44.1 Fixed in 2.44.1 Patch available CNA
  • n8n Vendorn8n Affected 2.0.0 to before 2.43.5 Fixed in 2.43.5 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*——n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:* Versions — — ·n8n

Remediation

Update n8n to 1.123.85 for the 1.x branch, 2.43.5 for 2.0.0 before 2.43.5, or 2.44.1 for 2.44.0 before 2.44.1.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • 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-2026-82160 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
    Show all 11 records →
  • Release ·

    n8n-io n8n 1.123.85

    10 records Highest priority Priority LOW 10 LOW

    Other records, highest priority first

    • 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
    • TI-2026-82155 OData filter injection in n8n Outlook and SharePoint nodesPriority LOW 30
    Show all 10 records →

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-118648
  2. 2026-10-28 Alias added: GHSA-j6xc-9gw8-942r
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-11-03 CISA SSVC decision points changed

References

Advisory 1

  • 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
See all 233 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences