CVE-2026-25637: ImageMagick Possible Memory Leak Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gm37-qx7w-p258",
  "modified" : "2026-02-24T15:30:16Z",
  "published" : "2026-02-24T15:30:16Z",
  "aliases" : [ "CVE-2026-25637" ],
  "summary" : "ImageMagick: Possible memory leak in ASHLAR encoder",
  "details" : "A memory leak in the ASHLAR image writer allows an attacker to exhaust process memory by providing a crafted image that results in small objects that are allocated but never freed.\n\n```\n==880062== Memcheck, a memory error detector\n==880062== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.\n==880062== Using Valgrind-3.18.1 and LibVEX; rerun with -h for copyright info\n==880062== \n==880062== \n==880062== HEAP SUMMARY:\n==880062==     in use at exit: 386,826 bytes in 696 blocks\n==880062==   total heap usage: 30,523 allocs, 29,827 frees, 21,803,756 bytes allocated\n==880062== \n==880062== LEAK SUMMARY:\n==880062==    definitely lost: 3,408 bytes in 3 blocks\n==880062==    indirectly lost: 88,885 bytes in 30 blocks\n==880062==      possibly lost: 140,944 bytes in 383 blocks\n==880062==    still reachable: 151,573 bytes in 259 blocks\n==880062==         suppressed: 0 bytes in 0 blocks\n==880062== Reachable blocks (those to which a pointer was found) are not shown.\n==880062== To see them, rerun with: --leak-check=full --show-leak-kinds=all\n==880062== \n==880062== For lists of detected and suppressed errors, rerun with: -s\n==880062== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)\n```",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
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  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gm37-qx7w-p258"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25637"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/commit/30ce0e8efbd72fd6b50ed3a10ae22f57c8901137"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ImageMagick/ImageMagick"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-401" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-24T15:30:16Z",
    "nvd_published_at" : "2026-02-24T01:16:13Z"
  }
}