Vulnerability · Published Apr 6, 2026 · Assigned by GitHub_M

CVE-2026-32602Homarr has a Race Condition in Invite Token Registration (TOCTOU)

Medium 4.2

In plain English

A medium-severity security flaw in homarr from homarr-labs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)4.2Medium

Exploit odds (30 days)0.1%top 98.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
homarr-labs	homarr	< 1.57.0

Weakness: CWE-367 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

References

https://github.com/homarr-labs/homarr/security/advisories/GHSA-vfw3-53q9-2hp8 x_refsource_CONFIRM