{"id":"CVE-2026-48976","published":"2026-09-21T18:17:08.557","lastModified":"2026-09-21T18:17:08.557","description":"HomeBox is a home inventory and organization system. Prior to 0.26.0, NotifierRepository.Update in backend/internal/data/repo/repo_notifier.go updates a notifier through UpdateOneID(id) without requiring the record's user ID to match the authenticated user. An authenticated user who supplies another tenant's notifier UUID to PUT /v1/notifiers/{id} can read the returned stored url, which may contain plaintext Shoutrrr credentials for Slack, SMTP, Telegram, Pushover, or Discord, and can replace the URL to redirect the victim's notifications to an attacker-controlled webhook. This issue is fixed in version 0.26.0.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-522","CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/sysadminsmedia/homebox/commit/ed3216a80998dfd81d4418700696244144883160","tags":[]},{"url":"https://github.com/sysadminsmedia/homebox/releases/tag/v0.26.0","tags":[]},{"url":"https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-mc8h-5c5v-37p7","tags":[]}],"exploitRefs":[{"url":"https://github.com/sysadminsmedia/homebox/commit/ed3216a80998dfd81d4418700696244144883160","tags":[]},{"url":"https://github.com/sysadminsmedia/homebox/releases/tag/v0.26.0","tags":[]},{"url":"https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-mc8h-5c5v-37p7","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows an authenticated user to read and potentially modify notifiers belonging to other tenants, exposing sensitive credentials and redirecting notifications to attacker-controlled webhooks.","exploitability":"Exploitation requires authentication as a tenant with access to another tenant's notifier UUID. The difficulty depends on the system’s access controls and user management practices.","blast_radius":"If exploited, this could lead to unauthorized access to sensitive communication channels and loss of control over notification flows for multiple users.","remediation":"Update to HomeBox version 0.26.0 or later to apply the necessary security fixes.","tags":["auth-bypass","web","api","credentials-exposure"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-22T06:08:57.204Z"}}