CVE-2026-119703
xiaozhi-esp32-server through 0.9.8 Authentication Bypass via Spoofed Device-ID Header
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| xiaozhi-esp32-server xinnan-tech |
≥ 0; ≤ 0.9.8 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 4.8 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | CNA: VulnCheck |
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 4.8 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448
exploit · ADP: CISA-ADP
References
- https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448CNA: VulnCheck · issue-tracking
- https://github.com/xinnan-tech/xiaozhi-esp32-serverCNA: VulnCheck · product
- https://github.com/xinnan-tech/xiaozhi-esp32-server/blob/v0.9.8/main/xiaozhi-server/core/websocket_server.py#L211-L232CNA: VulnCheck · technical-description
- https://github.com/xinnan-tech/xiaozhi-esp32-server/pull/3457CNA: VulnCheck · patch, issue-tracking
- https://www.vulncheck.com/advisories/xiaozhi-esp32-server-through-0.9.8-authentication-bypass-via-spoofed-device-id-headerCNA: VulnCheck · third-party-advisory
- https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448ADP: CISA-ADP · exploit
- https://github.com/xinnan-tech/xiaozhi-esp32-server[email protected]
- https://github.com/xinnan-tech/xiaozhi-esp32-server/blob/v0.9.8/main/xiaozhi-server/core/websocket_server.py#L211-L232[email protected]
- https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448[email protected]
- https://github.com/xinnan-tech/xiaozhi-esp32-server/pull/3457[email protected]
- https://www.vulncheck.com/advisories/xiaozhi-esp32-server-through-0.9.8-authentication-bypass-via-spoofed-device-id-header[email protected]
- https://github.com/xinnan-tech/xiaozhi-esp32-server/issues/3448134c704f-9b21-4f2e-91b3-4a467353bcc0
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