{"cve":"CVE-2019-5432","nvd":{"published":"2019-05-06T17:29:00.543","modified":"2026-06-17T02:37:40.693","status":"Modified","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions < 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-125","CWE-126"],"references":["https://hackerone.com/reports/541354","https://hackerone.com/reports/541354"],"products":["mqtt-packet_project:mqtt-packet"],"source":"nvd","synced_at":"2026-10-19T20:56:19.218283075+00:00"},"epss":{"cve":"CVE-2019-5432","score":0.01777,"percentile":0.78216,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wv67-9jq7-8r69","url":"https://osv.dev/vulnerability/GHSA-wv67-9jq7-8r69","summary":"Improper Input Validation and Buffer Over-read in mqtt-packet","modified":"2023-11-08T04:01:36.103305Z","packages":[{"ecosystem":"npm","name":"mqtt-packet","purl":"pkg:npm/mqtt-packet","ranges":["<3.5.1"],"fixed":["3.5.1"]},{"ecosystem":"npm","name":"mqtt-packet","purl":"pkg:npm/mqtt-packet","ranges":[">=4.0.0 <4.1.3"],"fixed":["4.1.3"]},{"ecosystem":"npm","name":"mqtt-packet","purl":"pkg:npm/mqtt-packet","ranges":[">=5.0.0 <5.6.1"],"fixed":["5.6.1"]},{"ecosystem":"npm","name":"mqtt-packet","purl":"pkg:npm/mqtt-packet","ranges":[">=6.0.0 <6.1.2"],"fixed":["6.1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}