{"id":"CVE-2019-11930","details":"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.","modified":"2026-07-08T16:07:42.770705Z","published":"2019-12-04T17:16:43.087Z","references":[{"type":"ADVISORY","url":"https://hhvm.com/blog/2019/10/28/security-update.html"},{"type":"ADVISORY","url":"https://www.facebook.com/security/advisories/cve-2019-11930"},{"type":"FIX","url":"https://github.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/facebook/hhvm","events":[{"introduced":"0"},{"fixed":"abe9500970b23bc9c385bf18a15bd38e830859a6"},{"introduced":"7d4f701b9ed004452d695fce4e1ef8f48babbf39"},{"last_affected":"8384c051684f8bd1a8b0238a25b2ef4c9e3463d0"},{"introduced":"0abb3b0c92e938bb7dac2d0c1603c5866e2a035b"},{"last_affected":"0ebbb8cc2ba783424d555f4267c0e27b6731e070"},{"introduced":"e3998b66312ebadd59b3a825f489a25bdb6f4ad3"},{"last_affected":"3f60b1f405b36bec6d85b4070ac066710f584032"},{"fixed":"524d2e60cfe910406ec6109e4286d7edd545ab36"}],"database_specific":{"cpe":["cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*","cpe:2.3:a:facebook:hhvm:4.24.0:*:*:*:*:*:*:*","cpe:2.3:a:facebook:hhvm:4.25.0:*:*:*:*:*:*:*","cpe:2.3:a:facebook:hhvm:4.26.0:*:*:*:*:*:*:*","cpe:2.3:a:facebook:hhvm:4.27.0:*:*:*:*:*:*:*","cpe:2.3:a:facebook:hhvm:4.28.0:*:*:*:*:*:*:*","cpe:2.3:a:facebook:hhvm:4.28.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"3.30.12"},{"introduced":"4.0.0"},{"last_affected":"4.8.5"},{"introduced":"4.9.0"},{"last_affected":"4.23.1"},{"introduced":"4.24.0"},{"last_affected":"4.24.0"},{"introduced":"4.25.0"},{"last_affected":"4.25.0"},{"introduced":"4.26.0"},{"last_affected":"4.26.0"},{"introduced":"4.27.0"},{"last_affected":"4.27.0"},{"introduced":"4.28.0"},{"last_affected":"4.28.0"},{"introduced":"4.28.1"},{"last_affected":"4.28.1"}],"source":["CPE_RANGE","CPE_STRING","REFERENCES"]}}],"versions":["4.24.0","4.25.0","4.26.0","4.27.0","4.28.0","4.28.1","nightly-2019.10.29","nightly-2019.10.28","nightly-2019.10.27","nightly-2019.10.26","nightly-2019.10.25","nightly-2019.10.24","HHVM-4.28.1","nightly-2019.10.23","nightly-2019.10.22","nightly-2019.10.21","HHVM-4.28.0","nightly-2019.10.20","nightly-2019.10.19","nightly-2019.10.18","nightly-2019.10.17","nightly-2019.10.16","nightly-2019.10.15","nightly-2019.10.14","nightly-2019.10.13","nightly-2019.10.12","nightly-2019.10.11","nightly-2019.10.10","nightly-2019.10.09","nightly-2019.10.08","nightly-2019.10.07","nightly-2019.10.06","nightly-2019.10.05","nightly-2019.10.04","nightly-2019.10.03","nightly-2019.10.02","nightly-2019.10.01","nightly-2019.09.30","nightly-2019.09.29","nightly-2019.09.28","nightly-2019.09.27","nightly-2019.09.26","nightly-2019.09.25","nightly-2019.09.24","HHVM-4.23.1","HHVM-4.8.5","HHVM-3.30.11","nightly-2019.09.23","nightly-2019.09.22","nightly-2019.09.21","nightly-2019.09.20","nightly-2019.09.19","nightly-2019.09.18","HHVM-4.23.0","nightly-2019.09.17","nightly-2019.09.16","nightly-2019.09.15","nightly-2019.09.14","nightly-2019.09.13","nightly-2019.09.12","nightly-2019.09.11","nightly-2019.09.10","nightly-2019.09.09","nightly-2019.09.08","nightly-2019.09.07","nightly-2019.09.06","nightly-2019.09.05","nightly-2019.09.04","HHVM-4.8.4","HHVM-3.30.10","nightly-2019.09.03","nightly-2019.09.02","nightly-2019.09.01","nightly-2019.08.31","nightly-2019.08.30","nightly-2019.08.29","nightly-2019.08.28","nightly-2019.08.27","nightly-2019.08.26","nightly-2019.08.25","nightly-2019.08.24","nightly-2019.08.23","nightly-2019.08.22","nightly-2019.08.21","nightly-2019.08.20","nightly-2019.08.19","nightly-2019.08.18","nightly-2019.08.17","nightly-2019.08.16","nightly-2019.08.15","nightly-2019.08.14","HHVM-4.8.3","HHVM-3.30.9","nightly-2019.08.13","nightly-2019.08.12","nightly-2019.08.11","nightly-2019.08.10","nightly-2019.08.09","nightly-2019.08.08","HHVM-3.30.8","HHVM-3.30.7","HHVM-4.8.2","nightly-2019.08.07","nightly-2019.08.06","nightly-2019.08.05","nightly-2019.08.04","nightly-2019.08.03","nightly-2019.08.02","nightly-2019.08.01","nightly-2019.07.31","nightly-2019.07.30","nightly-2019.07.29","nightly-2019.07.28","nightly-2019.07.27","nightly-2019.07.26","nightly-2019.07.25","nightly-2019.07.24","nightly-2019.07.23","nightly-2019.07.22","nightly-2019.07.21","nightly-2019.07.20","nightly-2019.07.19","nightly-2019.07.18","nightly-2019.07.17","nightly-2019.07.16","nightly-2019.07.15","nightly-2019.07.14","nightly-2019.07.13","nightly-2019.07.12","nightly-2019.07.11","nightly-2019.07.10","nightly-2019.07.09","nightly-2019.07.08","nightly-2019.07.07","nightly-2019.07.06","nightly-2019.07.05","nightly-2019.07.04","nightly-2019.07.03","nightly-2019.07.02","nightly-2019.07.01","nightly-2019.06.30","nightly-2019.06.29","nightly-2019.06.28","nightly-2019.06.27","nightly-2019.06.26","nightly-2019.06.25","nightly-2019.06.24","nightly-2019.06.23","nightly-2019.06.22","nightly-2019.06.21","nightly-2019.06.20","nightly-2019.06.19","nightly-2019.06.17","nightly-2019.06.18","nightly-2019.06.16","nightly-2019.06.15","nightly-2019.06.14","nightly-2019.06.13","nightly-2019.0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