{"id":"CVE-2026-40183","aliases":["GHSA-jvgr-9ph5-m8v4"],"url":"https://o3.security/vulnerability/CVE-2026-40183","summary":"ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float","details":"ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, the JXL encoder has an heap write overflow when a user specifies that the image should be encoded as 16 bit floats. This issue has been fixed in version 7.1.2-19.","published":"2026-04-13T21:28:20.797Z","modified":"2026-08-07T11:50:17.150890593Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Magick.NET-Q16-AnyCPU","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-AnyCPU","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-OpenMP-arm64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-arm64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-x64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-x86","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-OpenMP-arm64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-OpenMP-x64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-arm64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-x64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-x86","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-AnyCPU","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-OpenMP-arm64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-OpenMP-x64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-arm64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-x64","fixedVersion":"14.12.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-x86","fixedVersion":"14.12.0"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19"},{"type":"WEB","url":"https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40183.json"},{"type":"ADVISORY","url":"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40183"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:50:17.150890593Z"}}