CVE-2026-40196
highpriority · track · 0EPSS 0.002 · 16 %ileEUUSEPSS · scored 2026-10-27
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ID remained permanently assigned to a user after being invited to a group, even after their access to that group was revoked.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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
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references (7)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-40196cnnvd
- https://github.com/sysadminsmedia/homebox/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-40196cnnvd
- https://github.com/sysadminsmedia/homebox/releases/tag/v0.25.0enisa_euvd
- https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-6pvm-v73p-p6m9enisa_euvd
- https://github.com/sysadminsmedia/homebox/releases/tag/v0.25.0ProductRelease Notesnvd
- https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-6pvm-v73p-p6m9Vendor Advisorynvd
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