What’s Vulnerable › Vulnerabilities
CVE-2026-39880: Remnawave Backend has a race condition in HWID device limit allows bypassing max devices
- Severity: medium (CVSS 4.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-08 · updated 2026-07-24
- Weakness: CWE-362
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.
Affected products
- remnawave backend: through 2.7.4
References
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