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Vulnerability record · CVE-2026-32602 · published 6 April 2026

CVE-2026-32602: Homarr toctou race condition vulnerability

HHomarr · Homarr

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.

4.2 CVSS 3.1 Medium EPSS 0.17% · top 94.8% CWE-367 · TOCTOU race condition
4.2CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/homarr-labs/homarr/security/advisories/GHSA-vfw3-53q9-2hp8 Third Party AdvisoryVendor Advisory
https://github.com/homarr-labs/homarr/security/advisories/GHSA-vfw3-53q9-2hp8 Third Party AdvisoryVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-32602), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.