78 xiaozhi-esp32 up to 2.2.6 MCP Response main/mcp_server.cc ParseMessage improper synchronization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.8$0-$5k1.61-

Summaryinfo

A vulnerability classified as critical was found in 78 xiaozhi-esp32 up to 2.2.6. This affects the function ParseMessage of the file main/mcp_server.cc of the component MCP Response Handler. Such manipulation leads to improper synchronization. This vulnerability is documented as CVE-2026-13489. The attack can be executed remotely. Additionally, an exploit exists. The pull request to fix this issue awaits acceptance.

Detailsinfo

A vulnerability was found in 78 xiaozhi-esp32 up to 2.2.6 and classified as problematic. Affected by this issue is the function ParseMessage of the file main/mcp_server.cc of the component MCP Response Handler. The manipulation with an unknown input leads to a improper synchronization vulnerability. Using CWE to declare the problem leads to CWE-662. The product utilizes multiple threads or processes to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. Impacted is integrity.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-13489. The exploitation is known to be difficult. The attack may be launched remotely. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The pull request to fix this issue awaits acceptance.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 2.8

VulDB Base Score: 3.1
VulDB Temp Score: 2.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper synchronization
CWE: CWE-662
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/27/2026 Advisory disclosed
06/27/2026 +0 days VulDB entry created
06/27/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 2020
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-13489 (🔒)
GCVE (CVE): GCVE-0-2026-13489
GCVE (VulDB): GCVE-100-374486
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/27/2026 17:55
Changes: 06/27/2026 17:55 (59)
Complete: 🔍
Submitter: dem0000
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #838198: 78 xiaozhi-esp32 36200942cca3f7cbac6c927ce7458bad874297ab Information Exposure / Improper Routing (by dem0000)

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