Is CVE-2026-103248 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-103248?

CVE-2026-103248 has a CVSS v3 severity of CRITICAL (9).

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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.