{"id":"OSV-2021-777","aliases":[],"status":"published","title":"Heap-use-after-free in xmlAddNextSibling","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34461\n\n```\nCrash type: Heap-use-after-free READ 4\nCrash state:\nxmlAddNextSibling\nxmlXIncludeCopyRange\nxmlXIncludeCopyXPointer\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-05-20T00:00:30.166614Z","modified":"2026-10-19T14:29:28Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"libxml2","ranges":[{"type":"GIT","events":[{"introduced":"6c128fd58a0e4641c23a345d413672494622db1b"}]}],"versions":["CVE-2021-3541","v2.9.11","v2.9.12","v2.9.13","v2.9.14","v2.10.0","v2.10.1","v2.10.2","v2.10.3","v2.10.4","v2.11.0","v2.11.1","v2.11.2","v2.11.3","v2.11.4","v2.11.5","v2.11.6","v2.12.0","v2.12.1","v2.12.2","v2.12.3","v2.12.4","v2.12.5","v2.11.7","v2.12.6","v2.11.8","v2.12.7","v2.12.8","v2.13.0","v2.13.1","v2.13.2","v2.13.3","v2.11.9","v2.12.9","v2.13.4","v2.13.5","v2.13.6","v2.12.10","v2.13.7","v2.14.0","v2.14.1","v2.13.8","v2.14.2","v2.14.3","v2.14.4","v2.14.5","v2.13.9","v2.14.6","v2.15.0","v2.15.1","v2.15.2","v2.15.3","v2.15.4"]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34461","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2021-777","title":"Heap-use-after-free in xmlAddNextSibling","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34461\n\n```\nCrash type: Heap-use-after-free READ 4\nCrash state:\nxmlAddNextSibling\nxmlXIncludeCopyRange\nxmlXIncludeCopyXPointer\n```\n","status":"published","published":"2021-05-20T00:00:30.166614Z","modified":"2026-10-19T14:29:28.053903Z","updated_at":"2026-11-02T15:52:49.275624Z"}]}}