Medium severity · published Oct 16, 2026
CVE-2026-111383
Nezha 2.0.13 before 2.3.15 Denial of Service via /api/v1/ws/transfer WebSocket
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
nezha · nezhahq
2.0.13 before 2.3.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111383
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111383
github.com
https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f
github.com
https://github.com/nezhahq/nezha/security/advisories/GHSA-ch6h-w872-77mx
www.vulncheck.com
https://www.vulncheck.com/advisories/nezha-2.0.13-before-2.3.15-denial-of-service-via-api-v1-ws-transfer-websocket
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