Description
Xiaozhi-esp32-server-java through 6.1.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid device WebSocket tokens by requesting /api/device/ota with any MAC address. Attackers can open a victim device's WebSocket channel to read private role system prompts, write conversation history, consume LLM/STT/TTS credentials, and overwrite device metadata.
References7
- github.com/joey-zhou/xiaozhi-esp32-server-java
- github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiao…
- github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiao…
- github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiao…
- hackmd.io/@hieuPenguinnn/xiaozhi-esp32-server-java-ota-device-t…
- www.vulncheck.com/advisories/xiaozhi-esp32-server-java-through-…
- hackmd.io/@hieuPenguinnn/xiaozhi-esp32-server-java-ota-device-t…
Metrics
- CVSS 3.1
-
5.6
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - CVSS 4.0
-
6.3
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/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 - EPSS — exploit probability
- 0% percentile: 41 · as of 10 November 2026
- CWE
- CWE-290
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.