Critical severity9.0NVD Advisory· Published Oct 1, 2026· Updated Oct 1, 2026

CVE-2026-103248

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

N8n Io/N8nllm-fuzzy
Range: <1.123.80, 2.0.0 to <2.39.6, 2.40.0 to <2.40.1

Patches

Vulnerability mechanics

References

github.com/n8n-io/n8n/security/advisories/GHSA-xrqg-3xcp-h45xnvd
www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-postgrest-filter-injection-via-supabasenvd

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