CVE-2026-13489

LOW

78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization

Title source: cna
STIX 2.1

Description

A weakness has been identified in 78 xiaozhi-esp32 up to 2.2.6. Affected by this issue is the function ParseMessage of the file main/mcp_server.cc of the component MCP Response Handler. This manipulation causes improper synchronization. Remote exploitation of the attack is possible. The attack's complexity is rated as high. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance.

References (7)

Core 7
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-374486 | 78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization
https://vuldb.com/vuln/374486
Signature, Permissions Required signature permissions-required
VDB-374486 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/374486/cti
Third Party Advisory third-party-advisory
CVE-2026-13489 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-13489
Third Party Advisory third-party-advisory
Submit #838198 | 78 xiaozhi-esp32 36200942cca3f7cbac6c927ce7458bad874297ab Information Exposure / Improper Routing
https://vuldb.com/submit/838198
Exploit exploit issue-tracking
https://github.com/78/xiaozhi-esp32/issues/2020

Scores

CVSS v3 3.1
EPSS 0.0023
EPSS Percentile 13.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-662
Status published
Products (7)
78/xiaozhi-esp32 2.2.0
78/xiaozhi-esp32 2.2.1
78/xiaozhi-esp32 2.2.2
78/xiaozhi-esp32 2.2.3
78/xiaozhi-esp32 2.2.4
78/xiaozhi-esp32 2.2.5
78/xiaozhi-esp32 2.2.6
Published Jun 28, 2026
Tracked Since Jun 28, 2026