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CVE-2026-111386— Nezha 1.7.0 before 2.3.15 Cross-Tenant Server-ID Enumeration via getServerConfig

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（Nezha）系统在 1.7.0 版本至 2.3.15 版本之前存在一个信息泄露漏洞。该漏洞允许已认证的用户通过差异响应来枚举其他租户的服务器 ID。攻击者可以针对 getServerConfig 和 setServerConfig 接口逐一探测连续的服务器 ID，并根据返回结果中区分“权限拒绝”与“成功响应”，从而映射到其他用户的服务器。

CVSS 4.3 · Medium EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 2

VendorProduct Version RangeStatus
nezhahq nezha 1.7.0< 2.3.15 affected
2.3.15 unaffected
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I. Basic Information for CVE-2026-111386

Vulnerability Information
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Vulnerability Title
Nezha 1.7.0 before 2.3.15 Cross-Tenant Server-ID Enumeration via getServerConfig
Source: CVE Program / CVE List V5
Vulnerability Description
Nezha from 1.7.0 before 2.3.15 contains an information disclosure vulnerability that allows authenticated members to enumerate other tenants' server IDs through differential responses. Attackers can sweep sequential IDs against getServerConfig and setServerConfig, distinguishing 'permission denied' from success payloads to map other users' servers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nezhahq nezha 1.7.0 ~ 2.3.15 -

II. Public POCs for CVE-2026-111386

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111386

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Vendor Advisories for CVE-2026-111386 (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-2026-111384 6.5 MEDIUM Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket
CVE-2026-111385 4.8 MEDIUM Nezha 2.1.0 before 2.3.15 Host Header Injection via MCP Transfer Tools

IV. Related Vulnerabilities

Same product: nezha
Same vendor: nezhahq
Same weakness: CWE-204

V. Comments for CVE-2026-111386

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