Is CVE-2026-77071 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-77071 being exploited in the wild.

How severe is CVE-2026-77071?

Critical severity, with a CVSS score of 9.8, published 20 August 2026.

Which products and versions are affected?

N8n before 1.123.69, 2.33.4, and 2.34.1.

Is there a fix for CVE-2026-77071?

A patch was published on 2026-08-20: Patches released in versions 1.123.69, 2.33.4, and 2.34.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-77071 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-77071?

Check whether you run N8n at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-77071: n8n Supabase node PostgREST filter injection in Row operations

CVE-2026-77071 · Severity: critical · CVSS 9.8 · Published 2026-08-20

n8n is a workflow automation platform that integrates with databases like Supabase. The Supabase node contains a filter injection vulnerability that allows attackers to bypass row-level access controls in Get Many, Delete, and Update operations, potentially exposing, modifying, or deleting entire database tables instead of the intended single rows.

Technologies: N8n. Vendors: N8n.

Quick answers

Is CVE-2026-77071 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-77071 being exploited in the wild.
How severe is CVE-2026-77071?: Critical severity, with a CVSS score of 9.8, published 20 August 2026.
Which products and versions are affected?: N8n before 1.123.69, 2.33.4, and 2.34.1.
Is there a fix for CVE-2026-77071?: A patch was published on 2026-08-20: Patches released in versions 1.123.69, 2.33.4, and 2.34.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-77071 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-77071?: Check whether you run N8n at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a filter injection flaw (CWE-89, similar to SQL injection) in the Supabase node's PostgREST filter construction logic. When building filter queries for Row Get Many, Delete, and Update operations, the node concatenates user-supplied expression-bindable values without proper escaping or sanitization. An attacker can inject PostgREST filter syntax to widen the filter condition from a single-row match to match all rows, achieving full-table read, modification, or deletion. The attack requires network access to an n8n instance and the ability to create or modify workflows using the Supabase node; no authentication bypass is needed if workflows accept external input (e.g., via webhooks). Patches are available in n8n versions 1.123.69, 2.33.4, and 2.34.1 or later.

Affected products

n8n n8n before 1.123.69, 2.33.4, and 2.34.1

Timeline

2026-08-20: disclosed
2026-08-05: advisory: GitHub Security Advisory GHSA-f4f3-2g67-4vhm published
2026-08-20: patched: Patches released in versions 1.123.69, 2.33.4, and 2.34.1

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.