What’s Vulnerable › Vulnerabilities

CVE-2026-110873: Heym 0.0.55 before 0.0.121 Credential Theft via error_workflow_id Field

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-16
• Weakness: CWE-863

Description

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.

Affected products

• heymrun heym: from 0.0.55 before 0.0.121 — fixed in 0.0.121

How to fix

Upgrade to a fixed version: heymrun heym 0.0.121. Check the vendor advisory for mitigations.

References

• https://github.com/heymrun/heym/security/advisories/GHSA-c3f4-2mrj-jfqr
• https://www.vulncheck.com/advisories/heym-0.0.55-before-0.0.121-credential-theft-via-error-workflow-id-field

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