Vulnerability in Xinnan-Tech Xiaozhi-Esp32-Server
CVE-2026-119703
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448 (issue-tracking)
- github.com/xinnan-tech/xiaozhi-esp32-server (product)
- github.com/xinnan-tech/xiaozhi-esp32-server/blob/v0.9.8/main/xiaozhi-server/cor… (technical-description)
- github.com/xinnan-tech/xiaozhi-esp32-server/pull/3457 (issue-tracking, patch)
- www.vulncheck.com/advisories/xiaozhi-esp32-server-through-0.9.8-authentication-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119703?
- CVE-2026-119703 is a medium-severity vulnerability in Xinnan-Tech Xiaozhi-Esp32-Server, classified under Authentication Bypass by Spoofing. CVSS score: 4.8/10. Published 2026-10-30.
- How severe is CVE-2026-119703?
- Medium severity. CVSS v3 base score is 4.8 out of 10.