Vulnerability in Homarr
CVE-2026-32602
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.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (5.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Homarr
- Homarr-Labs Homarr — versions < 1.57.0
Weakness classification (CWE)
References
- github.com/homarr-labs/homarr/security/advisories/GHSA-vfw3-53q9-2hp8 (Third Party Advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-32602?
- CVE-2026-32602 is a medium-severity vulnerability in Homarr, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 4.2/10. Published 2026-04-06.
- How severe is CVE-2026-32602?
- Medium severity. CVSS v3 base score is 4.2 out of 10.