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CVE-2026-39880

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

CVSS 5 MEDIUMEPSS 0.2%CWE-362
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5EPSS 0.2%KEV nãoPoC Nuclei Metasploit Patch
Lifecycle
08 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Affected products
remnawave · backend

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