# CVE-2026-86079

## Summary

- **CVE ID:** CVE-2026-86079
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N)
- **CWE:** CWE-22
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 9, 2026

## Description

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the Elasticsearch and ElasticSecurity nodes interpolated workflow-controlled index and document identifiers directly into REST request paths. An identifier containing path separators or dot segments could select another index or a cluster administration endpoint under the stored Elasticsearch credential. The affected request construction includes packages/nodes-base/nodes/Elastic/Elasticsearch/GenericFunctions.ts and the missing toPathSegment encoding. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

## Affected Products

- n8n-io — n8n (>= 2.38.0, < 2.38.2)
- n8n-io — n8n (>= 2.0.0, < 2.37.7)
- n8n-io — n8n (< 1.123.76)

## References

- [CNA](https://github.com/n8n-io/n8n/security/advisories/GHSA-f2cp-m7mv-8jpv)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.32%
- **EPSS Percentile:** 25.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._