{"id":"JLSEC-2026-537","details":"A flaw was found in OpenJPEG’s encoder in the `opj_dwt_calc_explicit_stepsizes()` function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.","modified":"2026-07-25T18:24:35.910658597Z","published":"2026-05-26T19:31:24.313Z","upstream":["CVE-2020-27824"],"database_specific":{"license":"CC-BY-4.0","sources":[{"imported":"2026-07-17T22:05:39.883Z","modified":"2026-06-17T03:09:41.373Z","published":"2021-05-13T14:15:17.557Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-27824","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27824","database_specific":{"status":"Modified"},"id":"CVE-2020-27824"}]},"references":[{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1905723"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQR4EWRFFZQDMFPZKFZ6I3USLMW6TKTP/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/"},{"type":"WEB","url":"https://www.debian.org/security/2021/dsa-4882"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"}],"affected":[{"package":{"name":"OpenJpeg_jll","ecosystem":"Julia","purl":"pkg:julia/OpenJpeg_jll?uuid=643b3616-a352-519d-856d-80112ee9badc"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.4.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-537.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:M/Au:N/C:N/I:N/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}