{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32696", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-13T14:33:42.822Z", "datePublished": "2026-03-30T20:11:30.580Z", "dateUpdated": "2026-03-30T20:11:30.580Z"}, "containers": {"cna": {"title": "NanoMQ HTTP Auth: Missing username/password can trigger a NULL-pointer strlen() in auth_http.c:set_data(), causing a process crash \u2014 SIGSEGV, remotely triggerable", "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "lang": "en", "description": "CWE-476: NULL Pointer Dereference", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/nanomq/nanomq/security/advisories/GHSA-77f4-wvq8-mp3p", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-77f4-wvq8-mp3p"}, {"name": "https://github.com/nanomq/NanoNNG/pull/1394", "tags": ["x_refsource_MISC"], "url": "https://github.com/nanomq/NanoNNG/pull/1394"}, {"name": "https://github.com/nanomq/NanoNNG/commit/c20aa27e5290bb480a5315099952480d35f37a8b", "tags": ["x_refsource_MISC"], "url": "https://github.com/nanomq/NanoNNG/commit/c20aa27e5290bb480a5315099952480d35f37a8b"}, {"name": "https://github.com/nanomq/nanomq/releases/tag/0.24.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/nanomq/nanomq/releases/tag/0.24.7"}], "affected": [{"vendor": "nanomq", "product": "nanomq", "versions": [{"version": ">= 0.24.6, < 0.24.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T20:11:30.580Z"}, "descriptions": [{"lang": "en", "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In NanoMQ version 0.24.6, after enabling auth.http_auth (HTTP authentication), when a client connects to the broker using MQTT CONNECT without providing username/password, and the configuration params uses the placeholders %u / %P (e.g., username=\"%u\", password=\"%P\"), the HTTP request construction phase enters auth_http.c:set_data(). This results in calling strlen() on a NULL pointer, causing a SIGSEGV crash. This crash can be triggered remotely, resulting in a denial of service. This issue has been patched in version 0.24.7."}], "source": {"advisory": "GHSA-77f4-wvq8-mp3p", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In NanoMQ version 0.24.6, after enabling auth.http_auth (HTTP authentication), when a client connects to the broker using MQTT CONNECT without providing username/password, and the configuration params uses the placeholders %u / %P (e.g., username=\"%u\", password=\"%P\"), the HTTP request construction phase enters auth_http.c:set_data(). This results in calling strlen() on a NULL pointer, causing a SIGSEGV crash. This crash can be triggered remotely, resulting in a denial of service. This issue has been patched in version 0.24.7."}], "id": "CVE-2026-32696", "lastModified": "2026-03-30T21:17:09.603", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-30T21:17:09.603", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nanomq/NanoNNG/commit/c20aa27e5290bb480a5315099952480d35f37a8b"}, {"source": "security-advisories@github.com", "url": "https://github.com/nanomq/NanoNNG/pull/1394"}, {"source": "security-advisories@github.com", "url": "https://github.com/nanomq/nanomq/releases/tag/0.24.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-77f4-wvq8-mp3p"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}