# CVE-2026-86081 — n8n-io n8n

> As of 2026-09-09, CVE-2026-86081 is a High-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in n8n-io n8n, CVSS v4.0 7.1, EPSS 0.3% (25.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-86081 as of 2026-09-09; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-09

## What is CVE-2026-86081?

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the Git node clone operation matched an attacker-controlled destination path against the default N8N_BLOCK_FILE_PATTERNS regular expression. The pattern ^(./).git(/.)$ allowed catastrophic backtracking and ran synchronously in the main n8n process. An authenticated workflow editor could therefore freeze the instance with one workflow execution; the affected default is declared in packages/@n8n/config/src/configs/security.config.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

The record classifies CVE-2026-86081 under weakness class [CWE-1333](https://cwe.mitre.org/data/definitions/1333.html). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 27 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 7.1 — High (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 25.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-08, last modified 2026-09-09

## Is CVE-2026-86081 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [n8n-io](https://intel.threadlinqs.com/vendors/n8n-io): n8n

## How to fix CVE-2026-86081

No vendor patch reference has been recorded for CVE-2026-86081 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-86081

No threat campaign in the Threadlinqs corpus currently references CVE-2026-86081, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-09-09.

**Vendor advisory and patch**

- [github.com](https://github.com/n8n-io/n8n/security/advisories/GHSA-j535-v25q-vx3q)

**Other references**

- [github.com](https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76)
- [github.com (n8n@2.37)](https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7)
- [github.com (n8n@2.38)](https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-86081
Full detection coverage and IOCs for threats exploiting CVE-2026-86081 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp