HKUDS nanobot up to 0.1.4 Bridge API bridge/src/server.ts BRIDGE_TOKEN missing origin validation in websockets

Summaryinfo

A vulnerability was found in HKUDS nanobot up to 0.1.4. It has been declared as problematic. The impacted element is an unknown function of the file bridge/src/server.ts of the component Bridge API. Such manipulation of the argument BRIDGE_TOKEN leads to missing origin validation in websockets. This vulnerability is referenced as CVE-2026-35589. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in HKUDS nanobot up to 0.1.4. It has been rated as problematic. Affected by this issue is some unknown processing of the file bridge/src/server.ts of the component Bridge API. The manipulation of the argument BRIDGE_TOKEN with an unknown input leads to a missing origin validation in websockets vulnerability. Using CWE to declare the problem leads to CWE-1385. The product uses a WebSocket, but it does not properly verify that the source of data or communication is valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-35589 since 04/03/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 0.1.5 eliminates this vulnerability. The upgrade is hosted for download at github.com.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• HKUDS

Name

• nanobot

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.1.3
• 0.1.4

Website

• Product: https://github.com/HKUDS/nanobot/

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