Vulnerability · Published Sep 21, 2026 · Assigned by GitHub_M
CVE-2026-48974HomeBox: Forced Group Membership Without Consent in Homebox AddMember Handler
Medium 5.4
In plain English
A medium-severity missing authorization in homebox from sysadminsmedia. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Official description
HomeBox is a home inventory and organization system. Prior to 0.26.0, POST /v1/groups/members invokes HandleGroupMemberAdd and GroupService.AddMember using a caller-supplied userID without requiring an owner role, an invitation token, target-user consent, or target-user notification. Any authenticated user can force another account into the caller's group, disclose the target user's email address and name through the resulting member list, and create the membership prerequisite used by a separate cross-group inventory-wipe vulnerability. This issue is fixed in version 0.26.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sysadminsmedia | homebox | < 0.26.0 |
Weakness: CWE-841, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N