CVE-2026-48976: CWE-522: Insufficiently Protected Credentials in sysadminsmedia homebox
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.
AI Analysis
Technical Summary
HomeBox versions before 0.26.0 contain an authorization bypass in NotifierRepository.Update, where the UpdateOneID(id) function does not verify that the notifier record's user ID matches the authenticated user. An attacker with valid authentication can supply another tenant's notifier UUID to the PUT /v1/notifiers/{id} endpoint, read the stored URL containing plaintext credentials for Slack, SMTP, Telegram, Pushover, or Discord, and replace the URL to redirect notifications to an attacker-controlled webhook. This vulnerability is classified under CWE-522 (Insufficiently Protected Credentials) and CWE-639 (Authorization Bypass Through User-Controlled Key). The vulnerability has a CVSS 3.1 score of 8.1 (High severity) and is fixed in HomeBox version 0.26.0.
Potential Impact
An authenticated user can access and exfiltrate plaintext notification service credentials belonging to other tenants and manipulate notification URLs to redirect notifications to attacker-controlled endpoints. This compromises confidentiality and integrity of notification data but does not affect availability.
Mitigation Recommendations
Upgrade HomeBox to version 0.26.0 or later, where this authorization bypass vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
CVE-2026-48976: CWE-522: Insufficiently Protected Credentials in sysadminsmedia homebox
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.
CVSS v3.1
Score 8.1high
Affected software
sysadminsmedia
homebox
pkg:golang/github.com/sysadminsmedia/homeboxRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
HomeBox versions before 0.26.0 contain an authorization bypass in NotifierRepository.Update, where the UpdateOneID(id) function does not verify that the notifier record's user ID matches the authenticated user. An attacker with valid authentication can supply another tenant's notifier UUID to the PUT /v1/notifiers/{id} endpoint, read the stored URL containing plaintext credentials for Slack, SMTP, Telegram, Pushover, or Discord, and replace the URL to redirect notifications to an attacker-controlled webhook. This vulnerability is classified under CWE-522 (Insufficiently Protected Credentials) and CWE-639 (Authorization Bypass Through User-Controlled Key). The vulnerability has a CVSS 3.1 score of 8.1 (High severity) and is fixed in HomeBox version 0.26.0.
Potential Impact
An authenticated user can access and exfiltrate plaintext notification service credentials belonging to other tenants and manipulate notification URLs to redirect notifications to attacker-controlled endpoints. This compromises confidentiality and integrity of notification data but does not affect availability.
Mitigation Recommendations
Upgrade HomeBox to version 0.26.0 or later, where this authorization bypass vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-26T23:26:07.974Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab16d9855bf5e2cf5412e55
Added to database: 09/21/2026, 17:47:04 UTC
Last enriched: 09/21/2026, 18:01:32 UTC
Last updated: 09/21/2026, 20:04:52 UTC
Views: 7
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