{"cve":"CVE-2019-11930","nvd":{"published":"2019-12-04T17:16:43.087","modified":"2026-06-17T02:13:51.403","status":"Modified","description":"An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-763"],"references":["https://github.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36","https://hhvm.com/blog/2019/10/28/security-update.html","https://www.facebook.com/security/advisories/cve-2019-11930","https://github.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36","https://hhvm.com/blog/2019/10/28/security-update.html"],"products":["facebook:hhvm"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-11930","score":0.03248,"percentile":0.88324,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}