CVE-2026-39880
Remnawave Backend has a race condition in HWID device limit allows bypassing max devices
CVSS Score
5.0
EPSS Score
0.0%
EPSS Percentile
7th
Remnawave Backend is the backend for the Remnawave proxy and user management solution. Prior to 2.7.5, a glitch in the HWID device registration logic allows an authenticated user to bypass the configured limit for HWID devices and register more devices than expected, allowing them to resell subscriptions and consume excessive traffic. This vulnerability is fixed in 2.7.5.
| CWE | CWE-362 |
| Vendor | remnawave |
| Product | backend |
| Published | Apr 8, 2026 |
| Last Updated | Apr 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
remnawave / backend
< 2.7.5