CVE-2026-111383
CVE-2026-111383 · Nezha 2.0.13 before 2.3.15 Denial of Service via /api/v1/ws/transfer WebSocket
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Nezha from 2.0.13 before 2.3.15 contains a resource exhaustion vulnerability that allows authenticated users to open unbounded concurrent connections to the /api/v1/ws/transfer WebSocket endpoint. Attackers can hold thousands of subscriptions created by ServerTransferClass.Subscribe without limits, exhausting file descriptors, memory, and goroutines and blocking agent gRPC reconnections.
CVSS 7.1 · High · EPSS 0.4% · Fix available
- Published
- Updated
Affected products and versions
nezha
- Versions
- ≥ 2.0.13, < 2.3.15: Affected (semver)
- 2.3.15: Not affected (semver)
Update to 2.3.15
Original sources
- https://github.com/nezhahq/nezha/security/advisories/GHSA-ch6h-w872-77mx
- https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f
- https://www.vulncheck.com/advisories/nezha-2.0.13-before-2.3.15-denial-of-service-via-api-v1-ws-transfer-websocket
- https://nvd.nist.gov/vuln/detail/CVE-2026-111383