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CVE-2026-81032— NebulaGraph through 3.8.0 Unauthenticated Read and Modification of Runtime Configuration

Quick assessment

Affected
vesoft-inc nebula
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

vesoft NebulaGraph是vesoft公司的一款分布式图数据库。 vesoft NebulaGraph 3.8.0及之前版本存在授权问题漏洞，该漏洞源于未经验证的HTTP服务暴露运行时配置，可能导致攻击者读取敏感配置信息并修改守护进程行为，如禁用传输安全、重定向日志文件。

CVSS 9.8 · Critical EPSS 0.36% · P28

Affected Version Matrix 1

VendorProduct Version RangeStatus
vesoft-inc nebula ≤ 3.8.0 affected
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I. Basic Information for CVE-2026-81032

Vulnerability Information
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Vulnerability Title
NebulaGraph through 3.8.0 Unauthenticated Read and Modification of Runtime Configuration
Source: CVE Program / CVE List V5
Vulnerability Description
NebulaGraph exposes its runtime configuration over an unauthenticated HTTP service. Each daemon starts the web service defined in src/webservice/WebService.cpp, whose bind address defaults to all interfaces, and registers routes for reading and writing gflags alongside status and statistics. Neither the service nor its router carries any authentication, token check or address restriction. The read route returns the daemon's full set of runtime flag values, which includes the configured certificate, key and certificate-authority paths, the password file path, data directories and the transport-security enable flags. The write route parses a supplied map and applies each entry through the gflags runtime setter, so a caller able to reach the port can change the daemon's behaviour without restarting it, including disabling the transport-security flags, redirecting log files and altering flags such as failed_login_attempts and password_lock_time_in_secs. Public reports of this endpoint describe a single name, enable_authorize, being refused by the handler; at release 3.8.0 that refusal is not present and the handler applies every name it is given.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
vesoft NebulaGraph 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vesoft NebulaGraph是vesoft公司的一款分布式图数据库。 vesoft NebulaGraph 3.8.0及之前版本存在授权问题漏洞，该漏洞源于未经验证的HTTP服务暴露运行时配置，可能导致攻击者读取敏感配置信息并修改守护进程行为，如禁用传输安全、重定向日志文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vesoft-inc nebula 0 ~ 3.8.0 -

II. Public POCs for CVE-2026-81032

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6419 chars
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III. Intelligence Information for CVE-2026-81032

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Patches & Fixes for CVE-2026-81032 (1)

Vendor Advisories for CVE-2026-81032 (1)

Proof of Concept for CVE-2026-81032 (1)

Other References for CVE-2026-81032 (2)

IV. Related Vulnerabilities

Same product: nebula
Same weakness: CWE-306

V. Comments for CVE-2026-81032

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