Vulnerability in n8n-io n8n

[ Description ]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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund13 Oct 2026WID-SEC-2026-3898

  n8n: Multiple vulnerabilities Translated from German

  CVE-2026-118641CVE-2026-118647CVE-2026-118648+11 more CVEs

[ References ]References

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