CVE-2026-110873

High

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.

SeverityHigh

CVSS7.1

Exploit probability—

ProductHeym

PublishedOct 14, 2026

First seenOct 14, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Update

heymrun heym0.0.121 or later

Vendor advisories

github.com/heymrun/heym/security/advisories/GHSA-c3f4-2mrj-jfqr

Affected products

Product	Affected versions	Fixed in
heymrun heym	0.0.55 ≤ v < 0.0.121	0.0.121

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