CVE-2026-59254 n8n - External Secrets Disclosure via Workflow Node Expressions
Authenticated project editors can read plaintext external secrets by referencing them in workflow node expressions, bypassing intended access controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59254?
CVE-2026-59254 is a medium-severity vulnerability in n8n, published on 15 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.
Weakness: CWE-639
Which versions are affected by CVE-2026-59254?
4 open source packages ship an affected version, including n8n.
| Package | Affected | Fixed in |
|---|---|---|
n8n npm | All versions | 2.27.4 |
n8n npm | All versions | 2.27.4 |
n8n npm | From 2.28.0 | 2.28.1 |
n8n npm | From 2.28.0 | 2.28.1 |
How do I fix CVE-2026-59254?
Upgrade n8n to a fixed version for your release line: 2.27.4 or 2.28.1.
Is CVE-2026-59254 being exploited?
There is no known exploitation of CVE-2026-59254 in the wild and no public exploit code.
Sources
Also known as GHSA-2434-3x6q-8r99, MINI-44vv-f3j5-vh5g.