CVE-2026-21888

{"id": "CVE-2026-21888", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-03-11T16:16:23.930", "references": [{"url": "https://github.com/nanomq/nanomq/issues/2192", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-cggc-6m7w-j7x5", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer() accepts 5-byte varints without bounds checks; reliably triggers OOB read / crash when built with ASan. This affects 0.24.6 and earlier."}, {"lang": "es", "value": "NanoMQ MQTT Broker (NanoMQ) es una Plataforma de Mensajer\u00eda de Borde integral. An\u00e1lisis de enteros de bytes variables de MQTT v5 fuera de l\u00edmites: get_var_integer() acepta varints de 5 bytes sin comprobaciones de l\u00edmites; desencadena de forma fiable una lectura fuera de l\u00edmites / ca\u00edda cuando se compila con ASan. Esto afecta a la versi\u00f3n 0.24.6 y anteriores."}], "lastModified": "2026-03-17T19:20:17.350", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "490B7BD1-582C-4755-985F-7A3682332DEE", "versionEndIncluding": "0.24.6"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}