Back
CVE-2026-13489
78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization
Low2.3EPSS 0.35%
- Published
- Updated
- Reserved
- Assigned by
- VulDB
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Low2.3 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P |
| VulDBCNA (assigner) | 3.1 | Low3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 3.0 | Low3.1 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 2.0 | Low2.1 | AV:N/AC:H/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR |
| NVDNVD · Deferred | 4.0 | Low1.3 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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 (exploitation in 30 days)
- 0.35% · top 72% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.3.
Weakness
Affected products
- affected 2.2.0
- affected 2.2.1
- affected 2.2.2
- affected 2.2.3
- affected 2.2.4
- affected 2.2.5
- affected 2.2.6
References (7)
- VDB-374486 | 78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization (opens in a new tab)vdb-entrytechnical-description
- VDB-374486 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-13489 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #838198 | 78 xiaozhi-esp32 36200942cca3f7cbac6c927ce7458bad874297ab Information Exposure / Improper Routing (opens in a new tab)third-party-advisory
- https://github.com/78/xiaozhi-esp32/issues/2020 (opens in a new tab)exploitissue-tracking
- https://github.com/78/xiaozhi-esp32/pull/2021 (opens in a new tab)issue-trackingpatch
- https://github.com/78/xiaozhi-esp32/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-13489)Record last updated .