VULNRABLE / Vulnerability / CVE-2026-86078

CVE-2026-86078

MEDIUM LOW n8n GHSA

Exploit verdict: No active-exploit signal

CVSS Score

5.5

Severity

MEDIUM

EPSS

Source

GHSA

Summary

n8n: Prototype Pollution via Workflow Structure Summary Can Lead to Denial of Service

What this means

CVE-2026-86078 is a medium-severity vulnerability affecting n8n, rated CVSS 5.5. The EPSS model estimates a 0% probability of exploitation in the next 30 days. Published September 11, 2026.

View full advisory at GHSA →