{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-25627", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-04T05:15:41.789Z", "datePublished": "2026-03-30T20:11:08.586Z", "dateUpdated": "2026-03-30T20:11:08.586Z"}, "containers": {"cna": {"title": "nanomq: OOB Read / Crash (DoS) via Malformed MQTT Remaining Length over WebSocket", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/nanomq/nanomq/security/advisories/GHSA-w4rh-v3h2-j29x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-w4rh-v3h2-j29x"}, {"name": "https://github.com/nanomq/NanoNNG/pull/1405", "tags": ["x_refsource_MISC"], "url": "https://github.com/nanomq/NanoNNG/pull/1405"}, {"name": "https://github.com/nanomq/NanoNNG/commit/e80b30bad6d855593a68d18f2785bfaca6faf09e", "tags": ["x_refsource_MISC"], "url": "https://github.com/nanomq/NanoNNG/commit/e80b30bad6d855593a68d18f2785bfaca6faf09e"}, {"name": "https://github.com/nanomq/nanomq/releases/tag/0.24.8", "tags": ["x_refsource_MISC"], "url": "https://github.com/nanomq/nanomq/releases/tag/0.24.8"}], "affected": [{"vendor": "nanomq", "product": "nanomq", "versions": [{"version": "< 0.24.8", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T20:11:08.586Z"}, "descriptions": [{"lang": "en", "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.8, NanoMQ\u2019s MQTT-over-WebSocket transport can be crashed by sending an MQTT packet with a deliberately large Remaining Length in the fixed header while providing a much shorter actual payload. The code path copies Remaining Length bytes without verifying that the current receive buffer contains that many bytes, resulting in an out-of-bounds read (ASAN reports OOB / crash). This is remotely triggerable over the WebSocket listener. This issue has been patched in version 0.24.8."}], "source": {"advisory": "GHSA-w4rh-v3h2-j29x", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.8, NanoMQ\u2019s MQTT-over-WebSocket transport can be crashed by sending an MQTT packet with a deliberately large Remaining Length in the fixed header while providing a much shorter actual payload. The code path copies Remaining Length bytes without verifying that the current receive buffer contains that many bytes, resulting in an out-of-bounds read (ASAN reports OOB / crash). This is remotely triggerable over the WebSocket listener. This issue has been patched in version 0.24.8."}], "id": "CVE-2026-25627", "lastModified": "2026-03-30T21:17:07.750", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-30T21:17:07.750", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nanomq/NanoNNG/commit/e80b30bad6d855593a68d18f2785bfaca6faf09e"}, {"source": "security-advisories@github.com", "url": "https://github.com/nanomq/NanoNNG/pull/1405"}, {"source": "security-advisories@github.com", "url": "https://github.com/nanomq/nanomq/releases/tag/0.24.8"}, {"source": "security-advisories@github.com", "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-w4rh-v3h2-j29x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}