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CVE-2026-110616— NullHub through 2026.5.29 Missing Authentication for /api Management API

Quick assessment

Affected
nullclaw NullHub
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.

NullHub（截至版本 2026.5.29）存在一个缺失身份验证的漏洞。由于 字段默认为 null 且从未被赋值，未经身份验证的攻击者可以访问 管理 API。攻击者向非本地回环（non-loopback）监听地址发送不包含 或 头的请求，即可控制代理实例、重写配置（包括提供程序凭据），并管理定时任务（cron jobs）和 MCP 服务器。

CVSS 8.1 · High EPSS 0.81% · P56

Affected Version Matrix 1

VendorProduct Version RangeStatus
nullclaw NullHub ≤ 2026.5.29 affected
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I. Basic Information for CVE-2026-110616

Vulnerability Information
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Vulnerability Title
NullHub through 2026.5.29 Missing Authentication for /api Management API
Source: CVE Program / CVE List V5
Vulnerability Description
NullHub through 2026.5.29 contains a missing authentication vulnerability that allows unauthenticated attackers to access the /api/* management API because the auth_token field defaults to null and is never assigned. Attackers sending requests without Authorization or Origin headers to non-loopback listeners can control agent instances, rewrite configurations including provider credentials, and manage cron jobs and MCP servers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
nullclaw NullHub 0 ~ 2026.5.29 -

II. Public POCs for CVE-2026-110616

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III. Intelligence Information for CVE-2026-110616

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Other References for CVE-2026-110616 (5)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2026-110616

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