CVE-2026-39880

Description

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.

PUBLISHED Reserved 2026-04-07 | Published 2026-04-08 | Updated 2026-04-10 | Assigner GitHub_M

Problem types

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Product status

References

github.com/...ackend/security/advisories/GHSA-985p-44h5-v3pq

cve.org (CVE-2026-39880)

nvd.nist.gov (CVE-2026-39880)

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