{
  "threat_severity" : "Moderate",
  "public_date" : "2026-04-13T21:28:20Z",
  "bugzilla" : {
    "description" : "ImageMagick: Magick.NET: ImageMagick: Denial of Service via heap write overflow in JXL encoder",
    "id" : "2458054",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2458054"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-787",
  "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.", "A flaw was found in ImageMagick, a software for editing and manipulating digital images. When a user processes an image with the JXL encoder and specifies that it should be encoded as 16-bit floats, a heap write overflow occurs. This vulnerability could allow an attacker to cause a denial of service (DoS) by crashing the application." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "ImageMagick",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "ImageMagick",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-40183\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-40183\nhttps://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19\nhttps://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4\nhttps://github.com/dlemstra/Magick.NET/releases/tag/14.12.0" ],
  "name" : "CVE-2026-40183",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}