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PatchSiren cyber security CVE debrief

CVE-2026-111623 joey-zhou CVE debrief

CVE-2026-111623 debrief: Xiaozhi-esp32-server-java through 6.1.0 contains an authentication bypass vulnerability allowing unauthenticated attackers to obtain valid device WebSocket tokens by requesting /api/device/ota with any MAC address. This vulnerability enables attackers to bypass authentication and gain unauthorized access to WebSocket channels, potentially leading to data manipulation and unauthorized access to sensitive information. Defenders should assess exposure and prioritize remediation, especially for systems with internet-exposed WebSocket channels.

Vendor
joey-zhou
Product
xiaozhi-esp32-server-java
CVSS
MEDIUM 6.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-23
Advisory published
2026-10-16
Advisory updated
2026-10-23

Who should care

Defenders responsible for Xiaozhi-esp32-server-java systems, especially those with internet-exposed WebSocket channels, should assess exposure and prioritize remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure the security and integrity of affected systems.

Why it matters

CVE-2026-111623 allows unauthenticated attackers to bypass authentication and obtain valid device WebSocket tokens, potentially leading to unauthorized access and data manipulation.

  • Unauthenticated attackers can obtain valid device WebSocket tokens.
  • Attackers can open a victim device's WebSocket channel to read private role system prompts.
  • Attackers can write conversation history and consume LLM/STT/TTS credentials.

Technical summary

The 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. This vulnerability is caused by inadequate authentication checks in the /api/device/ota endpoint, enabling attackers to bypass authentication and gain unauthorized access to WebSocket channels. Defenders should prioritize verifying and remediating affected systems, especially those with internet-exposed WebSocket channels.

Defensive priority

Defenders should prioritize verifying and remediating affected systems, especially those with internet-exposed WebSocket channels.

Recommended defensive actions

  • Verify and remediate affected Xiaozhi-esp32-server-java systems, especially those with internet-exposed WebSocket channels.
  • Restrict access to the /api/device/ota endpoint.
  • Implement additional authentication and authorization mechanisms for WebSocket channels.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on the authentication bypass vulnerability in Xiaozhi-esp32-server-java through 6.1.0. Evidence is limited to public CVE Program records and a source item describing the vulnerability. Defenders should verify affected systems, review official advisories, and assess exposure to this vulnerability. The CVE record was published on 2026-10-16T17:38:59.425Z and has not been modified since then.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111623 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111623

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-111623 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111623

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Xiaozhi-esp32-server-java through 6.1.0 Authentication Bypass via OTA Endpoint Token Issuance

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111623.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@hieuPenguinnn/xiaozhi-esp32-server-java-ota-device-token-issuance

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiaozhi-server/src/main/java/com/xiaozhi/device/DeviceAppService.java

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiaozhi-server/src/main/java/com/xiaozhi/device/DeviceController.java

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/joey-zhou/xiaozhi-esp32-server-java/blob/v6.1.0/xiaozhi-common/src/main/java/com/xiaozhi/communication/auth/DeviceAuthService.java

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/joey-zhou/xiaozhi-esp32-server-java

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/xiaozhi-esp32-server-java-through-6.1.0-authentication-bypass-via-ota-endpoint-token-issuance

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.