CVE-2026-32602

Homarr has a Race Condition in Invite Token Registration (TOCTOU)

Published Apr 6, 2026 CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Homarr
Homarr homarr
CPEs cpe:2.3:a:homarr:homarr:*:*:*:*:*:*:*:*
Vendors & Products Homarr
Homarr homarr
Type Values Removed Values Added
First Time appeared Homarr-labs
Homarr-labs homarr
Vendors & Products Homarr-labs
Homarr-labs homarr
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Homarr has a Race Condition in Invite Token Registration (TOCTOU)
Weaknesses CWE-367
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Apr 6, 2026, 3:41 PM
Reserved
Mar 12, 2026, 2:54 PM
Status
Analyzed
Published
Apr 6, 2026, 3:17 PM
Modified
Jun 17, 2026, 10:36 AM