CVE-2026-32602: Homarr has a Race Condition in Invite Token Registration (TOCTOU)
Homarr is an open-source dashboard. Prior to 1.57.0, the user registration endpoint (/api/trpc/user.register) is vulnerable to a race condition that allows an attacker to create multiple user accounts from a single-use invite token. The registration flow performs three sequential database operations without a transaction: CHECK, CREATE, and DELETE. Because these operations are not atomic, concurrent requests can all pass the validation step (1) before any of them reaches the deletion step (3). This allows multiple accounts to be registered using a single invite token that was intended to be single-use. This vulnerability is fixed in 1.57.0.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-32602?
CVE-2026-32602 has a medium severity rating due to the potential exploitation of the race condition in user registration.
How do I fix CVE-2026-32602?
To fix CVE-2026-32602, upgrade Homarr to version 1.57.0 or later to eliminate the race condition in the invite token registration process.
What systems are affected by CVE-2026-32602?
CVE-2026-32602 affects all versions of Homarr prior to 1.57.0.
What type of vulnerability is CVE-2026-32602?
CVE-2026-32602 is classified as a race condition vulnerability found in the user registration process.
Can CVE-2026-32602 lead to unauthorized access?
Yes, CVE-2026-32602 can potentially allow attackers to create multiple user accounts from a single-use invite token, leading to unauthorized access.