{"id":"CVE-2026-75599","title":"HomeBox: Stored XSS via `javascript:` URI in Custom Entity Fields","summary":"HomeBox is a home inventory and organization system. Prior to 0.27.0, the maybeUrl() utility accepts markdown-style links in entity custom-field values without restricting the URL scheme, so an authenticated user can store a javascript: …","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"sysadminsmedia","product":"homebox","affected":["homebox < 0.27.0"],"published":"2026-11-05","updated":"2026-11-05","sourceUpdated":"2026-11-05T16:02:37.520Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-75599","references":[{"url":"https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-h4x5-6587-jpwp","label":"https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-h4x5-6587-jpwp"},{"url":"https://github.com/sysadminsmedia/homebox/commit/d76b1c9b94e91cd74e56ef8a129325d70835471f","label":"https://github.com/sysadminsmedia/homebox/commit/d76b1c9b94e91cd74e56ef8a129325d70835471f"},{"url":"https://github.com/sysadminsmedia/homebox/releases/tag/v0.27.0","label":"https://github.com/sysadminsmedia/homebox/releases/tag/v0.27.0"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T22:38:31.320Z","slug":"CVE-2026-75599","body":"## Overview\n\nHomeBox is a home inventory and organization system. Prior to 0.27.0, the maybeUrl() utility accepts markdown-style links in entity custom-field values without restricting the URL scheme, so an authenticated user can store a javascript: URI that is rendered as a clickable anchor on an item page. When another authenticated user clicks the link, attacker-controlled JavaScript executes in the victim's HomeBox origin, enabling session theft, account takeover, or data exfiltration. This issue is fixed in version 0.27.0.\n\n## Affected\n\n- `homebox < 0.27.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}