CVE-2026-82477: Mitre Heimdall

Medium severity, CVSS 5.8. EPSS: 0.5% chance of exploitation in the next 30 days.

In MITRE SAF Heimdall 2.11.6 through 2.13.x before 2.14.0, an SSRF issue allows remote attackers to access internal network resources via the Tenable proxy endpoint. This occurs in apps/backend/src/tenable/tenable.controller.ts.

Affected products

• Mitre Heimdall: from 2.11.6, before 2.14.0 (fixed in 2.14.0)

Published 2026-08-29. Last modified 2026-09-01.