CVE-2026-110853 n8n before 1.123.83 Authorization Bypass via Execute Sub-workflow Inline JSON
Authenticated users can bypass authorization to access credentials and modify data in other projects via workflow identity spoofing.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110853?
CVE-2026-110853 is a high-severity missing authorization vulnerability in n8n-io n8n, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier to resolve credentials from projects they do not belong to and modify another workflow's static data and error-workflow dispatch.
Weakness: CWE-639
Which versions are affected by CVE-2026-110853?
How do I fix CVE-2026-110853?
No fix has been published for CVE-2026-110853 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-110853 being exploited?
There is no known exploitation of CVE-2026-110853 in the wild and no public exploit code.
Sources
Also known as GHSA-866p-xg8v-g2q7, GHSA-9mgf-2q6c-j3gw.