CVE-2026-39880 — Remnawave Backend has a race condition in HWID device limit allows bypassing max devices

CVE-2026-39880

Remnawave Backend has a race condition in HWID device limit allows bypassing max devices PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
remnawave / backend	affected < 2.7.5

CWE

CWE-362

References

https://github.com/remnawave/backend/security/advisories/GHSA-985p-44h5-v3pq

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.