{"id":"CVE-2020-1892","details":"Insufficient boundary checks when decoding JSON in JSON_parser allows read access to out of bounds memory, potentially leading to information leak and DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.","modified":"2026-04-11T12:40:09.271629Z","published":"2020-03-03T15:15:11.993Z","references":[{"type":"ADVISORY","url":"https://hhvm.com/blog/2020/02/20/security-update.html"},{"type":"FIX","url":"https://github.com/facebook/hhvm/commit/dabd48caf74995e605f1700344f1ff4a5d83441d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/facebook/hhvm","events":[{"introduced":"0"},{"fixed":"75ea519eea0fe679c4efd3af377f5250e54b6388"},{"introduced":"0abb3b0c92e938bb7dac2d0c1603c5866e2a035b"},{"last_affected":"639027f066c5db1b684e400924b62dc1c803fda9"},{"introduced":"8df1dd7ead93f50388145dd8d7734a69204b50a7"},{"last_affected":"543f523b787b6fe1415b2cbc63a0d1965249fb0c"},{"introduced":"0"},{"last_affected":"1b6f9e26323e5c56090d17bd714cc2b73422760b"},{"introduced":"0"},{"last_affected":"5ed764f894421e4805f4e152040185c4e934bcbf"},{"introduced":"0"},{"last_affected":"db56116e9e8f2b6d952637b427aa14ae1399210d"},{"introduced":"0"},{"last_affected":"00af7f52850f0c7c8b4c796002a73f97c0c68cae"},{"introduced":"0"},{"last_affected":"0bc170b923c0e6decfafe11145da85adee1a477a"},{"introduced":"0"},{"last_affected":"0a1cf1804368b311781db1ec127e0deb674ff9d0"},{"introduced":"0"},{"last_affected":"9c6698440803448f5d8cf318d23d934ee473a54f"},{"fixed":"dabd48caf74995e605f1700344f1ff4a5d83441d"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"4.8.7"},{"introduced":"4.9.0"},{"last_affected":"4.32.0"},{"introduced":"4.33.0"},{"last_affected":"4.38.0"},{"introduced":"0"},{"last_affected":"4.39.0"},{"introduced":"0"},{"last_affected":"4.40.0"},{"introduced":"0"},{"last_affected":"4.41.0"},{"introduced":"0"},{"last_affected":"4.42.0"},{"introduced":"0"},{"last_affected":"4.43.0"},{"introduced":"0"},{"last_affected":"4.44.0"},{"introduced":"0"},{"last_affected":"4.45.0"}]}}],"versions":["HHVM-4.32.0","HHVM-4.38.0","HHVM-4.39.0","HHVM-4.40.0","HHVM-4.41.0","HHVM-4.42.0","HHVM-4.43.0","HHVM-4.44.0","HHVM-4.45.0","HHVM-4.8.0","HHVM-4.8.1","HHVM-4.8.2","HHVM-4.8.3","HHVM-4.8.4","HHVM-4.8.5","HHVM-4.8.6","HPHP-2.1.0","gcc-4.6","nightly-2019.03.28","nightly-2019.03.29","nightly-2019.03.30","nightly-2019.03.31","nightly-2019.04.01","nightly-2019.04.02","nightly-2019.04.03","nightly-2019.04.04","nightly-2019.04.05","nightly-2019.04.06","nightly-2019.04.07","nightly-2019.04.08","nightly-2019.04.09","nightly-2019.04.10","nightly-2019.04.11","nightly-2019.04.12","nightly-2019.04.13","nightly-2019.04.14","nightly-2019.04.15","nightly-2019.04.16","nightly-2019.04.17","nightly-2019.04.18","nightly-2019.04.19","nightly-2019.04.20","nightly-2019.04.21","nightly-2019.04.22","nightly-2019.04.23","nightly-2019.04.24","nightly-2019.04.25","nightly-2019.04.26","nightly-2019.04.27","nightly-2019.04.28","nightly-2019.04.29","nightly-2019.04.30","nightly-2019.05.01","nightly-2019.05.02","nightly-2019.05.03","nightly-2019.05.04","nightly-2019.05.05","nightly-2019.05.06","nightly-2019.05.07","nightly-2019.05.08","nightly-2019.05.09","nightly-2019.05.10","nightly-2019.05.11","nightly-2019.05.12","nightly-2019.05.13","nightly-2019.05.14","nightly-2019.05.15","nightly-2019.05.16","nightly-2019.05.17","nightly-2019.05.18","nightly-2019.05.19","nightly-2019.05.20","nightly-2019.05.21","nightly-2019.05.22","nightly-2019.05.23","nightly-2019.05.24","nightly-2019.05.25","nightly-2019.05.26","nightly-2019.05.27","nightly-2019.05.28","nightly-2019.05.29","nightly-2019.05.30","nightly-2019.05.31","nightly-2019.06.01","nightly-2019.06.02","nightly-2019.06.03","nightly-2019.06.04","nightly-2019.06.05","nightly-2019.06.06","nightly-2019.06.07","nightly-2019.06.08","nightly-2019.06.09","nightly-2019.06.10","nightly-2019.06.11","nightly-2019.06.12","nightly-2019.06.13","nightly-2019.06.14","nightly-2019.06.15","nightly-2019.06.16","nightly-2019.06.17","nightly-2019.06.18","nightly-2019.06.19","nightly-2019.06.20","nightly-2019.06.21","nightly-2019.06.22","nightly-2019.06.23","nightly-2019.06.24","nightly-2019.06.25","nightly-2019.06.26","nightly-2019.06.27","nightly-2019.06.28","nightly-2019.06.29","nightly-2019.06.30","nightly-2019.07.01","nightly-2019.07.02","nightly-2019.07.03","nightly-2019.07.04","nightly-2019.07.05","nightly-2019.07.06","nightly-2019.07.07","nightly-2019.07.08","nightly-2019.07.09","nightly-2019.07.10","nightly-2019.07.11","nightly-2019.07.12","nightly-2019.07.13","nightly-2019.07.14","nightly-2019.07.15","nightly-2019.07.16","nightly-2019.07.17","nightly-2019.07.18","nightly-2019.07.19","nightly-2019.07.20","nightly-2019.07.21","nightly-2019.07.22","nightly-2019.07.23","nightly-2019.07.24","nightly-2019.07.25","nightly-2019.07.26","nightly-2019.07.27","nightly-2019.07.28","nightly-2019.07.29","nightly-2019.07.30","nightly-2019.07.31","nightly-2019.08.01","nightly-2019.08.02","nightly-2019.08.03","nightly-2019.08.04","nightly-2019.08.05","nightly-2019.08.06","nightly-2019.08.07","nightly-2019.08.08","nightly-2019.08.09","nightly-2019.08.10","nightly-2019.08.11","nightly-2019.08.12","nightly-2019.08.13","nightly-2019.08.14","nightly-2019.08.15","nightly-2019.08.16","nightly-2019.08.17","nightly-2019.08.18","nightly-2019.08.19","nightly-2019.08.20","nightly-2019.08.21","nightly-2019.08.22","nightly-2019.08.23","nightly-2019.08.24","nightly-2019.08.25","nightly-2019.08.26","nightly-2019.08.27","nightly-2019.08.28","nightly-2019.08.29","nightly-2019.08.30","nightly-2019.08.31","nightly-2019.09.01","nightly-2019.09.02","nightly-2019.09.03","nightly-2019.09.04","nightly-2019.09.05","nightly-2019.09.06","nightly-2019.09.07","nightly-2019.09.08","nightly-2019.09.09","nightly-2019.09.10","nightly-2019.09.11","nightly-2019.09.12","nightly-2019.09.13","nightly-2019.09.14","nightly-2019.09.15","nightly-2019.09.16","nightly-2019.09.17","nightly-2019.09.18","nightly-2019.09.19","nightly-2019.09.20","nightly-2019.09.21","nightly-2019.09.22","nightly-2019.09.23","nightly-2019.09.24","nightly-2019.09.25","nightly-2019.09.26","nightly-2019.09.27","nightly-2019.09.28","nightly-2019.09.29","nightly-2019.09.30","nightly-2019.10.01","nightly-2019.10.02","nightly-2019.10.03","nightly-2019.10.04","nightly-2019.10.05","nightly-2019.10.06","nightly-2019.10.07","nightly-2019.10.08","nightly-2019.10.09","nightly-2019.10.10","nightly-2019.10.11","nightly-2019.10.12","nightly-2019.10.13","nightly-2019.10.14","nightly-2019.10.15","nightly-2019.10.16","nightly-2019.10.17","nightly-2019.10.18","nightly-2019.10.19","nightly-2019.10.20","nightly-2019.10.21","nightly-2019.10.22","nightly-2019.10.23","nightly-2019.10.24","nightly-2019.10.25","nightly-2019.10.26","nightly-2019.10.27","nightly-2019.10.28","nightly-2019.10.29","nightly-2019.10.30","nightly-2019.10.31","nightly-2019.11.01","nightly-2019.11.02","nightly-2019.11.03","nightly-2019.11.04","nightly-2019.11.05","nightly-2019.11.06","nightly-2019.11.07","nightly-2019.11.08","nightly-2019.11.09","nightly-2019.11.10","nightly-2019.11.11","nightly-2019.11.12","nightly-2019.11.13","nightly-2019.11.14","nightly-2019.11.15","nightly-2019.11.16","nightly-2019.11.17","nightly-2019.11.18","nightly-2019.11.19","nightly-2019.11.20","nightly-2019.11.21","nightly-2019.11.22","nightly-2019.11.23","nightly-2019.11.24","nightly-2019.11.25","nightly-2019.11.26","nightly-2019.11.27","nightly-2019.11.28","nightly-2019.11.29","nightly-2019.11.30","nightly-2019.12.01","nightly-2019.12.02","nightly-2019.12.03","nightly-2019.12.04","nightly-2019.12.05","nightly-2019.12.06","nightly-2019.12.07","nightly-2019.12.08","nightly-2019.12.09","nightly-2019.12.10","nightly-2019.12.11","nightly-2019.12.12","nightly-2019.12.13","nightly-2019.12.14","nightly-2019.12.15","nightly-2019.12.16","nightly-2019.12.17","nightly-2019.12.18","nightly-2019.12.19","nightly-2019.12.20","nightly-2019.12.21","nightly-2019.12.22","nightly-2019.12.23","nightly-2019.12.24","nightly-2019.12.25","nightly-2019.12.26","nightly-2019.12.27","nightly-2019.12.28","nightly-2019.12.29","nightly-2019.12.30","nightly-2019.12.31","nightly-2020.01.01","nightly-2020.01.02","nightly-2020.01.03","nightly-2020.01.04","nightly-2020.01.05","nightly-2020.01.06","nightly-2020.01.07","nightly-2020.01.08","nightly-2020.01.09","nightly-2020.01.10","nightly-2020.01.11","nightly-2020.01.12","nightly-2020.01.13","nightly-2020.01.14","nightly-2020.01.15","nightly-2020.01.16","nightly-2020.01.17","nightly-2020.01.18","nightly-2020.01.19","nightly-2020.01.20","nightly-2020.01.21","nightly-2020.01.22","nightly-2020.01.23","nightly-2020.01.24","nightly-2020.01.25","nightly-2020.01.26","nightly-2020.01.27","nightly-2020.01.28","nightly-2020.01.29","nightly-2020.01.30","nightly-2020.01.31","nightly-2020.02.01","nightly-2020.02.02","nightly-2020.02.03","nightly-2020.02.04","nightly-2020.02.05","nightly-2020.02.06","nightly-2020.02.07","nightly-2020.02.08","nightly-2020.02.09","nightly-2020.02.10","nightly-2020.02.11","nightly-2020.02.12","nightly-2020.02.13","nightly-2020.02.14","nightly-2020.02.15","nightly-2020.02.16","nightly-2020.02.17","nightly-2020.02.18","nightly-2020.02.19","nightly-2020.02.20","pre-hhvm","src-hphp"],"database_specific":{"vanir_signatures_modified":"2026-04-11T12:40:09Z","vanir_signatures":[{"target":{"file":"hphp/runtime/ext/json/JSON_parser.cpp","function":"JSON_parser"},"signature_type":"Function","digest":{"function_hash":"35277905984828142678405027506296893309","length":9524},"deprecated":false,"id":"CVE-2020-1892-bc8d1bcb","source":"https://github.com/facebook/hhvm/commit/dabd48caf74995e605f1700344f1ff4a5d83441d","signature_version":"v1"},{"target":{"file":"hphp/runtime/ext/json/JSON_parser.cpp"},"signature_type":"Line","digest":{"threshold":0.9,"line_hashes":["45691113506081497345613918569316305692","191599647334808312776973754716543424075","331811249916197529229843072433784836645","169245565843108794757193691464584637574"]},"deprecated":false,"id":"CVE-2020-1892-c2025f85","source":"https://github.com/facebook/hhvm/commit/dabd48caf74995e605f1700344f1ff4a5d83441d","signature_version":"v1"},{"target":{"file":"hphp/runtime/version.h"},"signature_type":"Line","digest":{"threshold":0.9,"line_hashes":["94241718375072390049514553484705121889","202283354718075733938286784465843663220","328155670994027392479458866869178825570","140335216194151808759673220052749435881"]},"deprecated":false,"id":"CVE-2020-1892-ea8c35e1","source":"https://github.com/facebook/hhvm/commit/75ea519eea0fe679c4efd3af377f5250e54b6388","signature_version":"v1"}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1892.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"}]}