CVE-2026-40196 Details
Description
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ID remained permanently assigned to a user after being invited to a group, even after their access to that group was revoked.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.
A vulnerability in HomeBox versions prior to 0.25.0 allows users to retain access to a default group ID after being removed from a group's access. While the web interface properly enforced this revocation, the API did not. This discrepancy enabled users to perform full create, read, update, and delete operations on the group's collections via the API, bypassing intended access controls. The issue arises because the default group ID, which was not properly validated when the X-Tenant header was omitted, remained active for users even after access was revoked.
Users can upgrade to HomeBox version 0.25.0 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/sysadminsmedia/homebox/releases/tag/v0.25.0 | [email protected] | ProductRelease Notes |
| https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-6pvm-v73p-p6m9 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-708 | Incorrect Ownership Assignment | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| sysadminsmedia homebox | < 0.25.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | Initial Analysis | [email protected] |
| Apr 17, 2026 | New CVE Received | [email protected] |