CVE-2026-13491
78 xiaozhi-esp32 MQTT Goodbye mqtt_protocol.cc GetInstance denial of service
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.
INFO
Published Date :
June 28, 2026, 11:15 a.m.
Last Modified :
June 28, 2026, 11:15 a.m.
Remotely Exploit :
No
Source :
VulDB
Affected Products
The following products are affected by CVE-2026-13491
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the provided patch e182471f8c5a22434346bd98da34d3b66c8c8b3e.
- Update the 78 xiaozhi-esp32 firmware to version 2.2.7 or later.
- Monitor network traffic for suspicious MQTT activity.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-13491 vulnerability anywhere in the article.