CVE-2026-67540
Heym - Horizontal IDOR: get-by-id on workflow/node templates skips the visibility check the list path enforces
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Heym builds and runs agentic systems and business-process automations on self-hosted infrastructure. Prior to version 0.0.70, get_workflow_template / get_node_template fetches a template by ID with no visibility / author / shared_with predicate, so any authenticated user can read (and use) any other tenant's private (visibility=specific_users) template — including its full node/edge graph and the email addresses it was shared with. The list endpoint enforces visibility correctly; the single-item get/use paths do not. This issue has been patched in version 0.0.70.
| CWE | CWE-639 |
| Vendor | heymrun |
| Product | heym |
| Published | Nov 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for heymrun heym
Be the first to know when new medium vulnerabilities affecting heymrun heym are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
heymrun / heym
< 0.0.70