CVE-2026-110873 Heym 0.0.55 before 0.0.121 Credential Theft via error_workflow_id Field
Shared collaborators can escalate privileges to exfiltrate owner credentials by manipulating workflow error handling fields.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110873?
CVE-2026-110873 is a high-severity vulnerability in heymrun heym, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-110873?
How do I fix CVE-2026-110873?
No fix has been published for CVE-2026-110873 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-110873 being exploited?
There is no known exploitation of CVE-2026-110873 in the wild and no public exploit code.
Sources
Also known as GHSA-c3f4-2mrj-jfqr, GHSA-wh8c-wx4r-x3rj.