sysadminsmedia HomeBox up to 0.26.x Email Uniqueness Constraint email privileges management

Summaryinfo

A vulnerability marked as critical has been reported in sysadminsmedia HomeBox up to 0.26.x. This vulnerability affects unknown code of the component Email Uniqueness Constraint. This manipulation of the argument email causes privileges management. This vulnerability appears as CVE-2026-85287. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in sysadminsmedia HomeBox up to 0.26.x. Affected by this vulnerability is an unknown code of the component Email Uniqueness Constraint. The manipulation of the argument email with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect integrity, and availability. The summary by CVE is:

HomeBox is a home inventory and organization system. Prior to 0.27.0, POST /api/v1/users/register and the users.email uniqueness constraint treat email addresses as case-sensitive while HomeBox uses a case-insensitive login lookup. An unauthenticated attacker who knows a victim's email can register a differently cased variant, creating duplicate rows that cause login to return 401 for both variants and deny the victim access, while also bypassing the one-account-per-email policy. This issue is fixed in version 0.27.0.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-85287 since 09/03/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 0.27.0 eliminates this vulnerability.

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Productinfo

Vendor

• sysadminsmedia

Name

• HomeBox

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26

Website

• Product: https://github.com/sysadminsmedia/homebox/

CPE 2.3info

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CPE 2.2info

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