{"id":"OSV-2026-867","summary":"Bad-cast to std::__shared_weak_count from invalid vptr","details":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=520147546\n\n```\nCrash type: Bad-cast\nCrash state:\nBad-cast to std::__shared_weak_count from invalid vptr\nstd::__1::shared_ptr\u003cAssimp::STEP::EXPRESS::DataType const\u003e::shared_ptr\nAssimp::STEP::ReadFileHeader\n```\n","modified":"2026-06-07T00:02:11.977765Z","published":"2026-06-07T00:02:11.977245Z","references":[{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=520147546"}],"affected":[{"package":{"name":"assimp","ecosystem":"OSS-Fuzz","purl":"pkg:generic/assimp"},"ranges":[{"type":"GIT","repo":"https://github.com/assimp/assimp.git","events":[{"introduced":"cac67afe479ac9be595d03bfa811d0e6a6baf39a"}]}],"ecosystem_specific":{"severity":"HIGH"},"database_specific":{"introduced_range":"be3d938e3e22d364b38807a247b3593fa7b260bd:626219cdd32f8fb0891464f27663d2667078d7cc","source":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/assimp/OSV-2026-867.yaml"}}],"schema_version":"1.9.0"}