Is CVE-2026-118646 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-118646?

CVE-2026-118646 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-118646

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.