CVE-2026-103248

CVSS 9.0 (critical) · published 2026-10-01

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.

Weakness: CWE-89

Source: NVD CVE-2026-103248

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-xrqg-3xcp-h45x
• https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-postgrest-filter-injection-via-supabase

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