CVE-2026-118646 n8n before 1.123.85, 2.43.5, and 2.44.1 ReDoS via Read/Write Files Node

High 7.1 Published 28 Oct 2026 Updated 28 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-118646?

CVE-2026-118646 is a high-severity vulnerability in n8n-io n8n, published on 28 Oct 2026.

Official description

n8n before 1.123.85, 2.43.5, and 2.44.1 contains a regular expression denial of service vulnerability that allows authenticated members to block the event loop via crafted glob patterns. Attackers who can create and run workflows can submit a wildcard-heavy File(s) Selector pattern causing exponential backtracking, making the UI, API, webhooks, and health checks unresponsive until restart.

Weakness: CWE-1333

Which versions are affected by CVE-2026-118646?

How do I fix CVE-2026-118646?

No fix has been published for CVE-2026-118646 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-118646 being exploited?

There is no known exploitation of CVE-2026-118646 in the wild and no public exploit code.

Sources

Also known as GHSA-59m3-j5wq-r7rq, GHSA-m7gv-mpg5-7c9v.