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TI-2026-53835 Aliases CVE-2026-77082GHSA-jxf5-f3hg-vxvj

n8n before 1.123.69 ReDoS via Filter and Switch Node

Priority LOW 24CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1333.

Summary

n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contains a regular expression denial of service (ReDoS) vulnerability in the Filter and Switch nodes, which compile user-supplied regex patterns with new RegExp() and execute them synchronously on the worker thread without complexity validation or execution timeout. A crafted regex pattern can block the worker for an extended period per data item processed, delaying other workflow executions on the same worker.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00472 41st percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.69, 2.34.1, 2.33.4

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

VendorProductAffected versionsFixed inStatusSource
n8nn8nbefore 1.123.691.123.69Patch availableCNA
n8nn8n2.34.0 to before 2.34.12.34.1Patch availableCNA
n8nn8n2.0.0 to before 2.33.42.33.4Patch availableCNA
  • n8n Vendorn8n Affected before 1.123.69 Fixed in 1.123.69 Patch available CNA
  • n8n Vendorn8n Affected 2.34.0 to before 2.34.1 Fixed in 2.34.1 Patch available CNA
  • n8n Vendorn8n Affected 2.0.0 to before 2.33.4 Fixed in 2.33.4 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*before 1.123.69; 2.0.0 to before 2.33.4Vulnerablen8n
cpe:2.3:a:n8n:n8n:2.34.0:*:*:*:*:node.js:*:*2.34.0Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* Versions before 1.123.69; 2.0.0 to before 2.33.4 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:2.34.0:*:*:*:*:node.js:*:* Versions 2.34.0 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n-io) Fixed in 1.123.69
  • Fix · CNA n8n (n8n-io) Fixed in 2.34.1
  • Fix · CNA n8n (n8n-io) Fixed in 2.33.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    n8n-io n8n 2.33.4, 2.34.1

    17 records Highest priority Priority MEDIUM 2 MEDIUM, 15 LOW

    Other records, highest priority first

    • TI-2026-53821 n8n before 2.34.1 Remote Code Execution via Path TraversalPriority MEDIUM 41
    • TI-2026-53833 n8n before 1.123.69 Arbitrary File Read and Write via SnowflakePriority MEDIUM 40
    • TI-2026-53832 n8n before 2.34.1 Authorization Bypass via Custom Role DeletionPriority LOW 39
    Show all 17 records →
  • Release ·

    n8n-io n8n 1.123.69

    13 records Highest priority Priority MEDIUM 1 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2026-53833 n8n before 1.123.69 Arbitrary File Read and Write via SnowflakePriority MEDIUM 40
    • TI-2026-53825 n8n before 1.123.69 Stored XSS via Form Completion PagePriority LOW 38
    • TI-2026-53837 n8n before 1.123.69 Remote Code Execution via Git Node Configuration ValuesPriority LOW 37
    Show all 13 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77082
  2. 2026-10-03 Alias added: GHSA-jxf5-f3hg-vxvj

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-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
See all 178 →

Sources

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