CVE-2026-77071: n8n

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

n8n before 1.123.69, 2.33.4, and 2.34.1 contains a PostgREST filter injection vulnerability in the Supabase node's Row Get Many, Delete, and Update operations, which built filter queries by concatenating an expression-bindable value without escaping. An attacker could inject a condition that widened the filter to match every row, turning an intended single-row operation into full-table disclosure, deletion, or modification.

Affected products

• n8n n8n: before 1.123.69 (fixed in 1.123.69); from 2.33.0, before 2.33.4 (fixed in 2.33.4); version 2.34.0 only

Published 2026-08-20. Last modified 2026-09-01.