CVE-2026-103248: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in n8n-io n8n
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a filter injection vulnerability in the Supabase node's Filters (String) mode that fails to escape field values. Attackers can inject filter expressions from untrusted input to read all table rows, update all records, or delete entire tables in a single request.
AI Analysis
Technical Summary
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a filter injection vulnerability in the Supabase node's Filters (String) mode. The vulnerability arises from improper neutralization of special elements used in SQL commands, allowing attackers to inject filter expressions from untrusted input. Exploitation can result in reading all table rows, updating all records, or deleting entire tables in a single request.
Potential Impact
Successful exploitation allows an unauthenticated attacker to perform SQL injection via the Supabase node filter expressions, potentially leading to full disclosure, modification, or deletion of database contents. This compromises data confidentiality, integrity, and availability within affected n8n instances.
Mitigation Recommendations
Fixed versions are available: upgrade to n8n version 1.123.80 or later if using the 1.x series, version 2.39.6 or later if using the 2.x series before 2.40.0, and version 2.40.1 or later if using 2.40.0 or later. Applying these updates will remediate the vulnerability.
CVE-2026-103248: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in n8n-io n8n
Description
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a filter injection vulnerability in the Supabase node's Filters (String) mode that fails to escape field values. Attackers can inject filter expressions from untrusted input to read all table rows, update all records, or delete entire tables in a single request.
CVSS v4.0
Score 7.1high
Affected software
n8n-io
n8n
pkg:github/n8n-io/n8nRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a filter injection vulnerability in the Supabase node's Filters (String) mode. The vulnerability arises from improper neutralization of special elements used in SQL commands, allowing attackers to inject filter expressions from untrusted input. Exploitation can result in reading all table rows, updating all records, or deleting entire tables in a single request.
Potential Impact
Successful exploitation allows an unauthenticated attacker to perform SQL injection via the Supabase node filter expressions, potentially leading to full disclosure, modification, or deletion of database contents. This compromises data confidentiality, integrity, and availability within affected n8n instances.
Mitigation Recommendations
Fixed versions are available: upgrade to n8n version 1.123.80 or later if using the 1.x series, version 2.39.6 or later if using the 2.x series before 2.40.0, and version 2.40.1 or later if using 2.40.0 or later. Applying these updates will remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-30T10:52:32.248Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abe748aa43b0b3b89bd1c79
Added to database: 10/01/2026, 14:56:10 UTC
Last enriched: 10/01/2026, 15:18:19 UTC
Last updated: 10/01/2026, 19:41:32 UTC
Views: 6
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