CVE-2026-40196
HIGHDescription
HomeBox is a home inventory and organization system. Versions prior to 0.25.0 contain a vulnerability where the defaultGroup ID remained permanently assigned to a user after being invited to a group, even after their access to that group was revoked. While the web interface correctly enforced the access revocation and prevented the user from viewing or modifying the group's contents, the API did not. Because the original group ID persisted as the user's defaultGroup, and this value was not properly validated when the X-Tenant header was omitted, the user could still perform full CRUD operations on the group's collections through the API, bypassing the intended access controls. This issue has been fixed in version 0.25.0.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 16% of all known CVEs.
References
Related Vulnerabilities
Other CWE-708 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2021-32726 | High | 7.1 | 1.8% | - | Fix |
| CVE-2021-32689 | High | 8.1 | 1.0% | - | Fix |
| CVE-2022-33737 | High | 7.5 | 0.8% | - | Fix |
| CVE-2023-4008 | Medium | 5.3 | 0.6% | - | Fix |
| CVE-2024-9633 | Low | 3.1 | 0.4% | - | Fix |
| CVE-2023-41881 | Low | 3.7 | 0.3% | - | Fix |
Embed a live status badge for CVE-2026-40196
Markdown
[](https://tridentstack.com/cve/CVE-2026-40196)HTML
<a href="https://tridentstack.com/cve/CVE-2026-40196"><img src="https://tridentstack.com/cve/badge/CVE-2026-40196.svg" alt="CVE-2026-40196"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-24.