---
id: CVE-2026-100861
title: >-
  heym before 0.0.105 fails to apply egress guards to integration services that
  use credential-supplied base URLs, allowing authenticated users to bypass SSRF
  protections
summary: >-
  heym before 0.0.105 fails to apply egress guards to integration services that
  use credential-supplied base URLs, allowing authenticated users to bypass SSRF
  protections. Attackers can configure credentials pointing to loopback,
  private, …
severity: medium
cvss: 5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N'
cwe:
  - CWE-918
vendor: heymrun
product: heym
affected:
  - heym < 0.0.105
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T02:17:25.820'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100861'
references:
  - url: 'https://github.com/heymrun/heym/security/advisories/GHSA-xchj-mw74-2232'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/heym-before-0.0.105-ssrf-via-credential-controlled-base-urls
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T02:41:45.581Z'
---

## Overview

heym before 0.0.105 fails to apply egress guards to integration services that use credential-supplied base URLs, allowing authenticated users to bypass SSRF protections. Attackers can configure credentials pointing to loopback, private, or cloud-metadata addresses and read internal service responses returned as workflow node output.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.