CVE-2026-48974 HomeBox: Forced Group Membership Without Consent in Homebox AddMember Handler
Authenticated users can force others into groups without consent, exposing personal data and enabling further attacks in HomeBox.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48974?
CVE-2026-48974 is a medium-severity missing authorization vulnerability in sysadminsmedia homebox, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Which versions are affected by CVE-2026-48974?
How do I fix CVE-2026-48974?
No fix has been published for CVE-2026-48974 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-48974 being exploited?
There is no known exploitation of CVE-2026-48974 in the wild and no public exploit code.
Sources
Also known as GHSA-ffcw-whqh-hgqf.