CVE-2026-44639

{"id": "CVE-2026-44639", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44639", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-18T17:19:13.578066Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.7, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.2}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "nanomq", "product": "nanomq", "versions": [{"status": "affected", "version": "< 0.24.14"}]}]}], "published": "2026-09-18T17:16:57.127", "references": [{"url": "https://github.com/nanomq/NanoNNG/commit/91bd4c7f45f945a3f5f0e37c459157dc7c277a07", "source": "security-advisories@github.com"}, {"url": "https://github.com/nanomq/NanoNNG/pull/1508", "source": "security-advisories@github.com"}, {"url": "https://github.com/nanomq/nanomq/releases/tag/0.24.14", "source": "security-advisories@github.com"}, {"url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-6mwg-445v-2qrv", "source": "security-advisories@github.com"}, {"url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-6mwg-445v-2qrv", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-407"}]}], "descriptions": [{"lang": "en", "value": "NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqtt_codec.c uses property_append() to walk the entire linked list for each property added by decode_buf_properties(). A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet containing many User Properties, causing O(N\u00b2) linked-list insertion and CPU work that makes the broker unresponsive; repeated packets can sustain the denial of service. This issue is fixed in version 0.24.14."}], "lastModified": "2026-09-18T18:17:06.990", "sourceIdentifier": "security-advisories@github.com"}