CVE-2026-27600
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Lifecycle Timeline
2Description
HomeBox is a home inventory and organization system. Prior to 0.24.0-rc.1, the notifier functionality allows authenticated users to specify arbitrary URLs to which the application sends HTTP POST requests. No validation or restriction is applied to the supplied host, IP address, or port. Although the application does not return the response body from the target service, its UI behavior differs depending on the network state of the destination. This creates a behavioral side-channel that enables internal service enumeration. This vulnerability is fixed in 0.24.0-rc.1.
Analysis
Homebox prior to 0.24.0-rc.1 allows authenticated users to trigger HTTP POST requests to arbitrary destinations through the notifier feature without host or port validation, enabling attackers to enumerate internal services by observing application behavior differences based on network responses. The vulnerability affects all users with authentication access to the notifier functionality and carries a medium risk due to its reliance on behavioral side-channels rather than direct information disclosure.
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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