CVE-2026-77071

n8n before 1.123.69 PostgREST Filter Injection via Supabase

State: Published
Severity: 7.1 High
Published: Aug 20, 2026
Updated: Aug 21, 2026
Reserved: Aug 20, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H	VulnCheck

Weaknesses

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Affected Products

Product	Versions
n8nn8n-io	before 1.123.69Affected 1.123.69Not affected
n8nn8n-io	2.34.0 to before 2.34.1Affected 2.34.1Not affected
n8nn8n-io	2.0.0 to before 2.33.4Affected 2.33.4Not affected

References

GitHub Security Advisory (GHSA-f4f3-2g67-4vhm)vendor-advisory
VulnCheck Advisory: n8n before 1.123.69 PostgREST Filter Injection via Supabasethird-party-advisory

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