CVE-2026-39880 — Remnawave Backend has a race condition in HWID device limit allows bypassing max devices
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 use…
Published: 2026-04-08 · CVSS: 5.0 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7