Medium · CVSS 6.5CVE-2026-67540

Heym - Horizontal IDOR: get-by-id on workflow/node templates skips the visibility check the list path enforcesCVE-2026-67540

Answer in brief

CVE-2026-67540 records a Medium severity (CVSS 6.5) vulnerability in Heym - Horizontal IDOR: get-by-id on workflow/node templates skips the visibility check the list path enforces. The current sources do not mark it as known exploited. The current feed maps heymrun/heym (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 11, 2026Updated Nov 11, 2026Source checked Nov 11, 2026First seen by HOL Nov 11, 2026Material review Nov 11, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps heymrun/heym (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
heymrun/heymgeneric	<0.0.70	0.0.70

Recommended response

Check inventory. Check lockfiles and deployed manifests for heymrun/heym.
Review the reported fix. Update heymrun/heym to 0.0.70 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Nov 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Nov 11, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.