CVE-2026-118646

CVSS 7.1 (high) · published 2026-10-28

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

Source: NVD CVE-2026-118646

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-m7gv-mpg5-7c9v
• https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-redos-via-read-write-files-node

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