---
id: CVE-2026-110873
title: >-
  Heym from 0.0.55 before 0.0.121 contains a privilege escalation vulnerability
  that allows shared collaborators to overwrite a workflow's error_workflow_id
  because the field is missing from OWNER_ONLY_EXECUTION_FIELDS
summary: >-
  Heym from 0.0.55 before 0.0.121 contains a privilege escalation vulnerability
  that allows shared collaborators to overwrite a workflow's error_workflow_id
  because the field is missing from OWNER_ONLY_EXECUTION_FIELDS. Attackers can
  point…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-863
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T23:17:29.347'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110873'
references:
  - url: 'https://github.com/heymrun/heym/security/advisories/GHSA-c3f4-2mrj-jfqr'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/heym-0.0.55-before-0.0.121-credential-theft-via-error-workflow-id-field
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-15T00:02:07.190Z'
---

## Overview

Heym from 0.0.55 before 0.0.121 contains a privilege escalation vulnerability that allows shared collaborators to overwrite a workflow's error_workflow_id because the field is missing from OWNER_ONLY_EXECUTION_FIELDS. Attackers can point the error workflow to their own workflow with an HTTP node, and when the parent workflow errors the owner's decrypted credentials are injected and exfiltrated.

## Remediation

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