CVE-2026-48976 Details
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.
A cross-tenant IDOR vulnerability has been identified in HomeBox versions prior to 0.26.0. The issue arises in the NotifierRepository.Update function, which updates a notifier without verifying that the user's ID matches the authenticated user. This flaw allows an authenticated user to manipulate notifiers belonging to other tenants. By supplying a different tenant's notifier UUID to the PUT /v1/notifiers/{id} endpoint, the user can access the stored URL, which may contain plaintext Shoutrrr credentials for services like Slack, SMTP, Telegram, Pushover, or Discord. Additionally, the user can replace the URL to redirect the victim's notifications to an attacker-controlled webhook.
Users are advised to update to HomeBox version 0.26.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 21, 2026CISA-ADP
Assessed Sep 21, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/sysadminsmedia/homebox/commit/ed3216a80998dfd81d4418700696244144883160 | [email protected] | Source CodeVendor |
| https://github.com/sysadminsmedia/homebox/releases/tag/v0.26.0 | [email protected] | Release NotesVendor |
| https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-mc8h-5c5v-37p7 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-522 | Insufficiently Protected Credentials | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| sysadminsmedia Homebox | <= 0.25.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 21, 2026 | New CVE Received | [email protected] |
| Sep 21, 2026 | CVE Modified | CISA-ADP |