Homarr has a Race Condition in Invite Token Registration (TOCTOU)
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| homarr-labs | homarr | before 1.57.0 | 1.57.0 | Patch available | CNA |
- homarr Vendorhomarr-labs Affected before 1.57.0 Fixed in 1.57.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:homarr:homarr:*:*:*:*:*:*:*:* | before 1.57.0 | Vulnerable | homarr-labs |
- cpe:2.3:a:homarr:homarr:*:*:*:*:*:*:*:* Versions before 1.57.0 Vulnerable ·homarr-labs
Remediation
- Fix · CNA homarr (homarr-labs) Fixed in 1.57.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-32602
References
More homarr-labs Homarr vulnerabilities
- TI-2025-34138 eslint-config-prettier 8.10.1, 9.1.1, 10.1.6, and 10.1.7 has embedded malicious code for… KEVCVSS 3.1HIGH 7.5
- TI-2026-22150 Homarr: Unauthenticated Information Disclosure (Integration Metadata Leak) CVSS 3.1HIGH 7.5
- TI-2026-25906 DOM-Based XSS in Homarr /auth/login Redirect CVSS 3.1HIGH 8.8
- TI-2026-22151 Homarr: Unauthenticated SSRF in rssFeed.ts CVSS 3.1MEDIUM 5.3
- TI-2025-41252 Homarr: missing input sanitization and possible privilege escalation through ldap search query injection CVSS 3.1CRITICAL 9.0
- TI-2025-40097 Homarr is Vulnerable to Stored Cross-Site Scripting (XSS) and Possible Privilege Escalation via Malicious SVG Upload CVSS 3.1HIGH 8.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences