CVE-2026-82477

Severity: medium (CVSS 5.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-29 · updated 2026-09-01
Weakness: CWE-918

Description

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

How to fix

Upgrade to a fixed version: MITRE Heimdall 2.14.0. Check the vendor advisory for mitigations.

References

https://github.com/mitre/heimdall2/commit/b6a9cdb4fc01f96aaa1a77cc27d1d449b485937b
https://github.com/mitre/heimdall2/releases/tag/v2.14.0
https://github.com/mitre/heimdall2/security/advisories/GHSA-g9vx-2rpf-gpch
https://github.com/mitre/heimdall2/security/advisories/GHSA-g9vx-2rpf-gpch

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