{"affected":[{"product":"heym","source":"CNA: GitHub_M","vendor":"heymrun","versions":[{"status":"affected","version":"< 0.0.70"}]}],"cveId":"CVE-2026-67540","cwes":["CWE-639"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.5,"severity":"medium","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1794433108344,"publishedAt":1794433108344,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/heymrun/heym/security/advisories/GHSA-5748-x76g-v68m"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/heymrun/heym/commit/4bcea469bfeee8c2659de90a1b2d16fdfed9ae97"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/heymrun/heym/releases/tag/0.0.70"}],"remediation":[],"revision":"8cb4573027a262192e3bbd11d54da46f156c1e90d456d3ebd1ffa8d4b85cd8bf","sources":[{"modifiedAt":1794433108344,"name":"CNA: GitHub_M","retrievedAt":1794435075588,"url":"https://www.cve.org/CVERecord?id=CVE-2026-67540"}],"ssvc":null,"status":"published","title":"Heym - Horizontal IDOR: get-by-id on workflow/node templates skips the visibility check the list path enforces","updatedAt":1794435075588}