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CVE-2026-2577— Nanobot Unauthenticated WhatsApp Session Hijack via WebSocket Bridge

Quick assessment

Affected
HKUDS nanobot
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.

nanobot是✨Data Intelligence Lab@HKU✨开源的一个轻量个人AI助手。 Nanobot存在安全漏洞，该漏洞源于WhatsApp bridge组件默认将WebSocket服务器绑定到所有网络接口且无需身份验证，可能导致会话劫持和信息泄露。

CVSS 10.0 · Critical EPSS 0.66% · P51
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I. Basic Information for CVE-2026-2577

Vulnerability Information
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Vulnerability Title
Nanobot Unauthenticated WhatsApp Session Hijack via WebSocket Bridge
Source: CVE Program / CVE List V5
Vulnerability Description
The WhatsApp bridge component in Nanobot binds the WebSocket server to all network interfaces (0.0.0.0) on port 3001 by default and does not require authentication for incoming connections. An unauthenticated remote attacker with network access to the bridge can connect to the WebSocket server to hijack the WhatsApp session. This allows the attacker to send messages on behalf of the user, intercept all incoming messages and media in real-time, and capture authentication QR codes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
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
nanobot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nanobot是✨Data Intelligence Lab@HKU✨开源的一个轻量个人AI助手。 Nanobot存在安全漏洞，该漏洞源于WhatsApp bridge组件默认将WebSocket服务器绑定到所有网络接口且无需身份验证，可能导致会话劫持和信息泄露。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
HKUDS nanobot 0 ~ 0.1.3.Post7 -

II. Public POCs for CVE-2026-2577

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III. Intelligence Information for CVE-2026-2577

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Vendor Advisories for CVE-2026-2577 (1)

IV. Related Vulnerabilities

Same product: nanobot
Same vendor: HKUDS
Same weakness: CWE-306