{"id":"CVE-2026-111383","title":"Nezha 2.0.13 before 2.3.15 Denial of Service via /api/v1/ws/transfer WebSocket","summary":"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 subscrip…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-770"],"vendor":"nezhahq","product":"nezha","affected":["nezha >= 2.0.13 < 2.3.15"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T01:17:52.239Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111383","references":[{"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-ch6h-w872-77mx","label":"GitHub Security Advisory (GHSA-ch6h-w872-77mx)"},{"url":"https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/nezha-2.0.13-before-2.3.15-denial-of-service-via-api-v1-ws-transfer-websocket","label":"VulnCheck Advisory: Nezha 2.0.13 before 2.3.15 Denial of Service via /api/v1/ws/transfer WebSocket"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T01:55:57.991Z","slug":"CVE-2026-111383","body":"## Overview\n\nNezha 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.\n\n## Affected\n\n- `nezha >= 2.0.13 < 2.3.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}