{"apiVersion":"1.0","identifier":"CVE-2026-53453","description":"Blueprint Studio is a VS Code-like file editor for Home Assistant configuration files. Prior to 2.5.2, Blueprint Studio exposed administrator-intended backend API actions to any authenticated Home Assistant user because the backend did not consistently enforce the panel-s admin-only authorization boundary. Affected surfaces included the backend API, upload API, stream routes, terminal WebSocket, Blueprint Studio WebSocket subscriptions, call_service, render_template, global_replace, file and stream access paths, upload handling, and terminal helpers. A non-admin user could invoke arbitrary Home Assistant services, expose Home Assistant state through templates, modify configuration files, access streamed or downloaded configuration content, upload files, or reach terminal-related helpers. These actions could compromise the confidentiality, integrity, and availability of the Home Assistant installation. This issue is fixed in version 2.5.2.","publishedAt":"2026-08-18T21:16:34","lastModifiedAt":"2026-08-19T14:17:32","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53453","cvssScore":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00338,"riskScore":0.9,"affectedProduct":"Blueprint Studio","affectedVersions":"<2.5.2","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-53453","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-53453","en":"https://www.redsauce.net/en/cves/CVE-2026-53453","fr":"https://www.redsauce.net/fr/cves/CVE-2026-53453","pt":"https://www.redsauce.net/pt/cves/CVE-2026-53453","de":"https://www.redsauce.net/de/cves/CVE-2026-53453","sk":"https://www.redsauce.net/sk/cves/CVE-2026-53453","el":"https://www.redsauce.net/el/cves/CVE-2026-53453"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-53453"}}