---
id: "CVE-2026-67545"
page: "https://infrastack.ai/live/CVE-2026-67545"
kind: "vulnerability"
aliases: ["CVE-2026-67545"]
title: "Heym: workflow HTTP node lets anonymous callers reach internal hosts"
severity: "high"
cvss: 7.4
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Heym", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["heym", "other", "self-hosted", "ssrf", "workflow-automation"]
not_affected_if: ["anonymous-execution-disabled", "heym-0.0.73-or-later", "no-internal-http-targets"]
published_at: "2026-11-11T22:17:29+00:00"
first_seen_at: "2026-11-11T22:29:35+00:00"
updated_at: "2026-11-11T22:33:15+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67545", "first_seen_at": "2026-11-11T22:29:35+00:00"}]
exploit_sources: []
---

# Heym: workflow HTTP node lets anonymous callers reach internal hosts

Link for people: https://infrastack.ai/live/CVE-2026-67545 (this .md is for agents)

Heym's HTTP workflow node sends requests to user-supplied URLs without checking the target host or IP address. If a workflow author has pointed an HTTP node at internal addresses such as cloud metadata endpoints and the workflow allows anonymous execution, an unauthenticated attacker can trigger those requests and reach internal services.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Heym affected range not listed fixed no fixed version listed

## Fix

- Heym: upgrade to `0.0.73` or later.

## Timeline

- 2026-11-11T22:29:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-67545

## Documents

- [advisory] Vendor advisory: github.com https://github.com/heymrun/heym/security/advisories/GHSA-8wj7-v2w6-wfcx
- [fix] Patch: github.com https://github.com/heymrun/heym/commit/360a8de56ab9be0b11acdfe89168c5f2d7ab6b1e
- [fix] Patch: github.com https://github.com/heymrun/heym/commit/583311603f8f81bf2f45a842727046ef17c99c9e
- [fix] Patch: github.com https://github.com/heymrun/heym/commit/87c216f6e564c58d1dd747115d079fb487233ccf
- [fix] Release notes: github.com https://github.com/heymrun/heym/releases/tag/0.0.73

## From the sources

Heym builds and runs agentic systems and business-process automations on self-hosted infrastructure. Prior to version 0.0.73, the HTTP workflow node in Heym makes outbound HTTP requests to user-supplied URLs without validation of the target host or IP address. If a workflow author has already configured an HTTP node that targets internal addresses such as cloud metadata endpoints or private network hosts, and exposed the workflow with anonymous execution, an unauthenticated attacker can trigger the preconfigured SSRF sink. The same project has comprehensive SSRF protection in its MCP integration, which is absent from the HTTP node. This issue has been patched in version 0.0.73.

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