CVE-2026-13491

78 xiaozhi-esp32 MQTT Goodbye mqtt_protocol.cc GetInstance denial of service

CVSS 6.3 MEDIUMEPSS 0.4%CWE-404

Vexday Risk Score

33Atenção

Decisão SSVC (CISA)

Attend

PoC disponível → acompanhar de perto

CVSS 6.3EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado

Ciclo de vida

28 jun 2026Publicada no NVD

Recomendação: Planejar correção próxima — já existe PoC pública.

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.

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Produtos afetados

78 · xiaozhi-esp32

PoCs públicas encontradas — 1

cve_referencegithub.com/78/xiaozhi-esp32/issues/2022não verificado

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Referências

https://github.com/78/xiaozhi-esp32/https://github.com/78/xiaozhi-esp32/commit/e182471f8c5a22434346bd98da34d3b66c8c8b3e https://github.com/78/xiaozhi-esp32/issues/2022 https://github.com/78/xiaozhi-esp32/pull/2023 https://vuldb.com/cve/CVE-2026-13491 https://vuldb.com/submit/838439 https://vuldb.com/vuln/374488 https://vuldb.com/vuln/374488/cti