{"id":"JLSEC-2026-501","details":"In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Selector_List::populate_extends in SharedPtr.hpp (used by ast.cpp and ast_selectors.cpp) may cause a Denial of Service (application crash) via a crafted sass input file.","modified":"2026-05-18T14:30:19.250402Z","published":"2026-05-18T14:23:04.937Z","upstream":["CVE-2018-19797"],"database_specific":{"license":"CC-BY-4.0","sources":[{"published":"2018-12-03T06:29:00.743Z","modified":"2024-11-21T03:58:34.933Z","id":"CVE-2018-19797","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2018-19797","imported":"2026-05-16T01:24:15.873Z","database_specific":{"status":"Modified"},"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2018-19797"}]},"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html"},{"type":"WEB","url":"https://github.com/sass/libsass/issues/2779"},{"type":"WEB","url":"https://github.com/sass/libsass/issues/2779"}],"affected":[{"package":{"name":"libsass_jll","ecosystem":"Julia","purl":"pkg:julia/libsass_jll?uuid=47bcb7c8-5119-555a-9eeb-0afcc36cd728"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.6.4+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-501.json"}}],"schema_version":"1.7.5"}