CVE-2026-40196
8.1 · HIGHOverview
CVE-2026-40196 is a high-severity vulnerability affecting sysadminsmedia homebox. It was published on April 17, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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ID remained permanently assigned to a user after being invited to a group, even after their access to that group was revoked.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.
Remediation
Check the references section for vendor advisories and patches from sysadminsmedia. Update homebox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| sysadminsmedia | homebox | >= 0, < 0.25.0 | Affected |
Frequently Asked Questions
What is CVE-2026-40196?
CVE-2026-40196 is a high-severity vulnerability affecting sysadminsmedia homebox. It was published on April 17, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-40196?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-40196?
Check the references section for vendor advisories and patches from sysadminsmedia. Update homebox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-40196?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-40196 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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