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CVE-2026-13491

3.7 · LOW

A vulnerability was detected in 78 xiaozhi-esp32 up to 2.2.6.

Published Jun 28, 2026CWE-404EPSS 0.62%

Overview

CVE-2026-13491 is a low-severity vulnerability. It was published on June 28, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability was detected in 78 xiaozhi-esp32 up to 2.2.6. This vulnerability affects the function Application::GetInstance of the file main/protocols/mqtt_protocol.cc of the component MQTT Goodbye Handler. Performing a manipulation of the argument session_id results in denial of service. The attack is possible to be carried out remotely. The complexity of an attack is rather high. It is stated that the exploitability is difficult. The exploit is now public and may be used. The patch is named e182471f8c5a22434346bd98da34d3b66c8c8b3e. It is recommended to apply a patch to fix this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/78/xiaozhi-esp32/GitHubgithub.com/78/xiaozhi-esp32/commit/e182471f8c5a22434346bd98da34d3b66c8c8b3eGitHubgithub.com/78/xiaozhi-esp32/issues/2022GitHubgithub.com/78/xiaozhi-esp32/pull/2023Refvuldb.com/cve/CVE-2026-13491Refvuldb.com/submit/838439Refvuldb.com/vuln/374488Refvuldb.com/vuln/374488/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-13491?

CVE-2026-13491 is a low-severity vulnerability. It was published on June 28, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2026-13491?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-13491?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-13491?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-13491 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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