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CVE-2026-35589— nanobot: Cross-Site WebSocket Hijacking in WhatsApp Bridge (CVE-2026-2577 Fix Update)

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 0.1.5之前版本存在安全漏洞，该漏洞源于WebSocket服务器未验证Origin标头，可能导致跨站WebSocket劫持。

CVSS 8.0 · High EPSS 0.16% · P5
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I. Basic Information for CVE-2026-35589

Vulnerability Information
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Vulnerability Title
nanobot: Cross-Site WebSocket Hijacking in WhatsApp Bridge (CVE-2026-2577 Fix Update)
Source: CVE Program / CVE List V5
Vulnerability Description
nanobot is a personal AI assistant. Versions prior to 0.1.5 contain a Cross-Site WebSocket Hijacking (CSWSH) vulnerability exists in the bridge's WebSocket server in bridge/src/server.ts, resulting from an incomplete remediation of CVE-2026-2577. The original fix changed the binding from 0.0.0.0 to 127.0.0.1 and added an optional BRIDGE_TOKEN parameter, but token authentication is disabled by default and the server does not validate the Origin header during the WebSocket handshake. Because browsers do not enforce the Same-Origin Policy on WebSockets unless the server explicitly denies cross-origin connections, any website visited by a user running the bridge can establish a WebSocket connection to ws://127.0.0.1:3001/ and gain full access to the bridge API. This allows an attacker to hijack the WhatsApp session, read incoming messages, steal authentication QR codes, and send messages on behalf of the user. This issue has bee fixed in version 0.1.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1385
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 0.1.5之前版本存在安全漏洞，该漏洞源于WebSocket服务器未验证Origin标头，可能导致跨站WebSocket劫持。
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
HKUDS nanobot < 0.1.5 -

II. Public POCs for CVE-2026-35589

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III. Intelligence Information for CVE-2026-35589

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Vendor Advisories for CVE-2026-35589 (1)

IV. Related Vulnerabilities

Same product: nanobot
Same vendor: HKUDS
Same weakness: CWE-1385