> CVE-2026-48976 [HIGH]

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PUBLISHED
2026-09-21 18:17
MODIFIED
2026-09-21 18:17
CVSS_SCORE V3
8.1
EPSS (Prob. Exploit)
0.45%
Top 62.4%
DATA SOURCES:
NVD 🔗 2026-09-21 CWE MITRE 🔗 2026-10-01 FIRST EPSS 🔗 2026-10-20 OSV 🔗 2026-09-27

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EXPLOITABILITY
2.8
IMPACT
5.2

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-522 CWE-639

> CWE DETAILED DESCRIPTIONS

CWE-522: Insufficiently Protected Credentials - The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. | CWE-639: Authorization Bypass Through User-Controlled Key - The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

HomeBox: Cross-Tenant IDOR in Notifier Update Leaks Shoutrrr Credentials and Allows Webhook Hijack

AFFECTED PACKAGES:
Unknown / Unknown
49 versions affected
ALIASES:
GHSA-mc8h-5c5v-37p7

> HISTORIQUE DES MODIFICATIONS

Première apparition
21/09/2026 18:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-522: Insufficiently Protected Credentials - The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retri...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/sysadminsmedia/homebox/commit/ed3216a80998dfd81d4418700696244...
https://github.com/sysadminsmedia/homebox/releases/tag/v0.26.0
https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-mc8h-5c5v-37p...
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