Auth bypass in N8n-Io N8n
CVE-2026-92588
n8n is a workflow automation platform. In n8n versions before 1.123.76, 2.37.7, and 2.38.2, the source control push endpoint derived the set of files to push from the file paths and status supplied in the client request payload instead of from the server-side status computed for the requesting user. An authenticated project-scoped user (e.g., a project admin) could therefore reference files belonging to projects they have no access to and push a deletion of those projects' workflows and credentials, resulting in cross-project data destruction. Exploitation requires the Source Control (Environments) enterprise feature to be licensed, enabled, and connected to a remote repository. The issue is fixed in 1.123.76, 2.37.7, and 2.38.2.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-hvrx-jc5j-pg3w (vendor-advisory)
- www.vulncheck.com/advisories/n8n-before-1.123.76-improper-authorization-via-sou… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92588?
- CVE-2026-92588 is a medium-severity vulnerability in N8n-Io N8n, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.4/10. Published 2026-09-16.
- How severe is CVE-2026-92588?
- Medium severity. CVSS v3 base score is 4.4 out of 10.