CVE-2026-77071

CriticalCVSS 9.8/10Last modified Sep 1, 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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-89

Affected software

Vendor	Product	Versions
n8n-io	n8n	< 1.123.69
n8n-io	n8n	>= 2.34.0, < 2.34.1
n8n-io	n8n	>= 2.0.0, < 2.33.4

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-f4f3-2g67-4vhmMitigation, Vendor Advisory
https://www.vulncheck.com/advisories/n8n-before-postgrest-filter-injection-via-supabaseThird Party Advisory

Timeline

Published: Aug 20, 2026
Last modified: Sep 1, 2026
NVD status: Analyzed

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