Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') Affecting n8n-oci-entrypoint package, versions <2.27.4-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-MINIMOSLATEST-N8NOCIENTRYPOINT-17944215
- published11 Jul 2026
- disclosed9 Jul 2026
Introduced: 9 Jul 2026
NewCVE-2026-59206 (opens in a new tab)How to fix?
Upgrade Minimos:latest n8n-oci-entrypoint to version 2.27.4-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream n8n-oci-entrypoint package and not the n8n-oci-entrypoint package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.
References
- https://www.cve.org/CVERecord?id=CVE-2026-59206
- https://osv.dev/vulnerability/MINI-5hcv-6rxv-9gc3
- https://osv.dev/vulnerability/CVE-2026-59206
- https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4
- https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1
- https://github.com/n8n-io/n8n/security/advisories/GHSA-75qm-gp28-rcq9