# CVE-2026-48826: HomeBox: Cross-Group Inventory Wipe in Homebox via Global Owner Role and X-Tenant Header Switching

> A user can permanently delete another group's inventory by manipulating the tenant header due to flawed global owner role checks.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Sep 2026
- **Updated:** 21 Sep 2026
- **Also known as:** GHSA-559j-7w3w-4fr7

## What is CVE-2026-48826?

CVE-2026-48826 is a high-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, HandleWipeInventory in backend/app/api/handlers/v1/v1_ctrl_actions.go authorizes POST /v1/actions/wipe-inventory through the global ctx.User.IsOwner value instead of the caller's role in the active group, while the active group is selected through the X-Tenant request header. Because every self-registered user who creates a group receives the global owner value, a user who is also a member of another group can select that group with X-Tenant and permanently delete its complete inventory, which is not recoverable without external backups. This issue is fixed in version 0.26.0.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2026-48826?


## How do I fix CVE-2026-48826?

No fix has been published for CVE-2026-48826 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-48826 being exploited?

There is no known exploitation of CVE-2026-48826 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48826 and fix it if it is affected.

What it is: CVE-2026-48826 is a high-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.
Exploitation: There is no known exploitation of CVE-2026-48826 in the wild and no public exploit code.

Affected product: sysadminsmedia homebox. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-48826/ (Markdown: https://insights.sbomify.com/CVE-2026-48826/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48826
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48826
- OSV: https://osv.dev/vulnerability/CVE-2026-48826

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48826/
Summaries are generated and may contain mistakes; the official description above is the record.