CVE-2026-77071

Critical

Description

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.

SeverityCritical

CVSS9.8

Exploit probability—

Product

N8n

PublishedAug 20, 2026

First seenAug 20, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

n8n n8n1.123.69, 2.33.4 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-f4f3-2g67-4vhm

Affected products

Product	Affected versions	Fixed in
n8n n8n	v < 1.123.69, 2.33.0 ≤ v < 2.33.4, 2.34.0	1.123.69, 2.33.4

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