CVE-2026-119703 Details
Description
xiaozhi-esp32-server through 0.9.8 contains an authentication bypass vulnerability in WebSocketServer._handle_auth that allows remote unauthenticated attackers to skip Bearer HMAC token verification by spoofing the Device-ID header. Attackers supplying an allowlisted MAC-address-shaped device identifier can open an authenticated WebSocket session, issue voice-assistant commands, exchange audio, and read that device's conversation context.
An authentication bypass vulnerability has been identified in xiaozhi-esp32-server versions through 0.9.8. The issue resides in the WebSocket server's authentication handling, where remote unauthenticated attackers can bypass Bearer HMAC token verification by spoofing the Device-ID header. Attackers who provide a device identifier resembling a MAC address can exploit this vulnerability to open an authenticated WebSocket session, issue voice assistant commands, exchange audio, and access the conversation context of the affected device.
Users can remove devices from the allowlist or disable the authentication bypass feature. The xiaozhi-esp32-server repository includes a pull request that addresses this vulnerability by modifying how the allowlist is handled.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 30, 2026CISA-ADP
Assessed Nov 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/xinnan-tech/xiaozhi-esp32-server | [email protected] | ProductVendor |
| https://github.com/xinnan-tech/xiaozhi-esp32-server/blob/v0.9.8/main/xiaozhi-server/core/websocket_server.py#L211-L232 | [email protected] | Source CodeVendor |
| https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/xinnan-tech/xiaozhi-esp32-server/pull/3457 | [email protected] | Issue TrackingVendor |
| https://www.vulncheck.com/advisories/xiaozhi-esp32-server-through-0.9.8-authentication-bypass-via-spoofed-device-id-header | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-290 | Authentication Bypass by Spoofing | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| xinnan-tech xiaozhi-esp32-server | <= 0.9.8 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 4, 2026 | CVE Modified | CISA-ADP |
| Oct 30, 2026 | New CVE Received | [email protected] |