Vulnerability in 78 Xiaozhi-Esp32
CVE-2026-13489
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- 78 Xiaozhi-Esp32 — versions 2.2.0, 2.2.1, 2.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/374486 (technical-description, vdb-entry)
- vuldb.com/vuln/374486/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-13489 (third-party-advisory)
- vuldb.com/submit/838198 (third-party-advisory)
- github.com/78/xiaozhi-esp32/issues/2020 (issue-tracking, exploit)
- github.com/78/xiaozhi-esp32/pull/2021 (issue-tracking, patch)
- github.com/78/xiaozhi-esp32/ (product)
Frequently asked questions
- What is CVE-2026-13489?
- CVE-2026-13489 is a low-severity vulnerability in 78 Xiaozhi-Esp32, classified under Improper Synchronization. CVSS score: 3.1/10. Published 2026-06-28.
- How severe is CVE-2026-13489?
- Low severity. CVSS v3 base score is 3.1 out of 10.