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CVE-2026-111384— Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket

Quick assessment

Affected
nezhahq nezha
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

哪吒监控（Nezha）1.0.0 至 2.3.15 版本（不含 2.3.15）在仪表盘的“文件管理器”WebSocket 接口中存在内存耗尽漏洞。由于 未调用 ，导致消息大小无限制。具有文件管理器权限的已认证用户可以向 发送一个超大的二进制消息，从而触发 OOM（内存溢出）终止机制，导致所有代理节点的监控中断。

CVSS 6.5 · Medium EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
nezhahq nezha 1.0.0< 2.3.15 affected
2.3.15 unaffected
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I. Basic Information for CVE-2026-111384

Vulnerability Information
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Vulnerability Title
Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket
Source: CVE Program / CVE List V5
Vulnerability Description
Nezha 1.0.0 before 2.3.15 contains a memory exhaustion vulnerability in the dashboard file manager WebSocket endpoint because fmStream never calls SetReadLimit, leaving message size unbounded. Authenticated users with file manager scopes can send one oversized binary message to /api/v1/ws/file/:id, triggering an OOM kill that drops all agent monitoring.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nezhahq nezha 1.0.0 ~ 2.3.15 -

II. Public POCs for CVE-2026-111384

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III. Intelligence Information for CVE-2026-111384

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Vendor Advisories for CVE-2026-111384 (2)

Same Patch Batch · nezhahq · 2026-10-16 · 5 CVEs total

CVE-2026-111387 6.5 MEDIUM Nezha 2.2.5 before 2.3.15 Information Disclosure via DDNS List Endpoint
CVE-2026-111383 6.5 MEDIUM Nezha 2.0.13 before 2.3.15 Denial of Service via /api/v1/ws/transfer WebSocket
CVE-2026-111385 4.8 MEDIUM Nezha 2.1.0 before 2.3.15 Host Header Injection via MCP Transfer Tools
CVE-2026-111386 4.3 MEDIUM Nezha 1.7.0 before 2.3.15 Cross-Tenant Server-ID Enumeration via getServerConfig

IV. Related Vulnerabilities

Same product: nezha
Same vendor: nezhahq
Same weakness: CWE-770

V. Comments for CVE-2026-111384

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