{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13491 exists.","fix":"No fix has been published for CVE-2026-13491 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-13491 is a medium-severity denial of service vulnerability in 78 xiaozhi-esp32, published on 28 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-13491 and fix it if it is affected.\n\nWhat it is: CVE-2026-13491 is a medium-severity denial of service vulnerability in 78 xiaozhi-esp32, published on 28 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13491 exists.\n\nAffected product: 78 xiaozhi-esp32. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-13491/ (Markdown: https://insights.sbomify.com/CVE-2026-13491/index.md)","id":"CVE-2026-13491","markdown":"https://insights.sbomify.com/CVE-2026-13491/index.md","name":"CVE-2026-13491","record":{"aliases":["GHSA-rwf9-x45x-533w"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ESP32 IoT firmware","requires_auth":"none","summary":"Remote attackers can cause denial of service in xiaozhi-esp32 devices by manipulating the session_id argument in the MQTT Goodbye Handler.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"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","version":"4.0"},"cwes":[{"id":"CWE-404","name":"Improper Resource Shutdown or Release"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"78 xiaozhi-esp32 MQTT Goodbye mqtt_protocol.cc GetInstance denial of service","id":"CVE-2026-13491","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"UsersWP \u003c= 1.2.65 - Authenticated (Subscriber+) Arbitrary File Deletion via File Upload Field","id":"CVE-2026-13492"},"packages":[],"prev":{"headline":"glpi-project glpi Document document.send.php canViewFile authorization","id":"CVE-2026-13490"},"products":["xiaozhi-esp32"],"published":"2026-06-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-29","vendors":["78"]},"summary":"Remote attackers can cause denial of service in xiaozhi-esp32 devices by manipulating the session_id argument in the MQTT Goodbye Handler.","url":"https://insights.sbomify.com/CVE-2026-13491/"}