{"id":"JLSEC-2026-878","details":"An integer overflow issue was discovered in ImageMagick's ExportIndexQuantum() function in `MagickCore/quantum-export.c`. Function calls to GetPixelIndex() could result in values outside the range of representable for the 'unsigned char'. When ImageMagick processes a crafted pdf file, this could lead to an undefined behaviour or a crash.","modified":"2026-07-30T18:23:49.019948251Z","published":"2026-07-30T16:02:27.435Z","upstream":["CVE-2021-20224"],"database_specific":{"license":"CC-BY-4.0","sources":[{"published":"2022-08-25T20:15:08.873Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-20224","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20224","database_specific":{"status":"Modified"},"id":"CVE-2021-20224","imported":"2026-07-30T14:08:43.413Z","modified":"2026-06-17T03:33:30Z"}]},"references":[{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/commit/5af1dffa4b6ab984b5f13d1e91c95760d75f12a6"},{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/commit/5af1dffa4b6ab984b5f13d1e91c95760d75f12a6"},{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/pull/3083"},{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/pull/3083"},{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick6/commit/553054c1cb1e4e05ec86237afef76a32cd7c464d"},{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick6/commit/553054c1cb1e4e05ec86237afef76a32cd7c464d"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html"}],"affected":[{"package":{"name":"ImageMagick_jll","ecosystem":"Julia","purl":"pkg:julia/ImageMagick_jll?uuid=c73af94c-d91f-53ed-93a7-00f77d67a9d7"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.9.12+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-878.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}