{"id":"JLSEC-2026-931","summary":"ImageMagick's failure to limit the depth of SVG file reads caused a DoS attack","details":"### Summary\n\nUsing Magick to read a malicious SVG file resulted in a DoS attack.\n\n### Details\n\nbt obtained using gdb:\n\n```\n#4 0x0000555555794c9c in ResizeMagickMemory (memory=0x7fffee203800, size=391344) at MagickCore/memory.c:1443\n#5 0x0000555555794e5a in ResizeQuantumMemory (memory=0x7fffee203800, count=48918, quantum=8) \nat MagickCore/memory.c:1508\n#6 0x0000555555acc8ed in SVGStartElement (context=0x517000000080, name=0x5190000055e3 \"g\", attributes=0x0) \nat coders/svg.c:1254\n#7 0x00007ffff6799b1c in xmlParseStartTag () at /lib/x86_64-linux-gnu/libxml2.so.2\n#8 0x00007ffff68c7bb8 in () at /lib/x86_64-linux-gnu/libxml2.so.2\n#9 0x00007ffff67a03f1 in xmlParseChunk () at /lib/x86_64-linux-gnu/libxml2.so.2\n```\n\nThis is related to the SVGStartElement and ResizeQuantumMemory functions.\n\n### PoC\n\n 1. Generate an SVG file\n\n 2. Read this file using Magick:\n\n```\n./magick /data/ylwang/Tools/LargeScan/targets/ImageMagick/test++/1.svg null\n```\n\n 3. Causes a DoS Attack\n\nMy server has a large amount of memory, causing a stack overflow to take a long time. I'll use the Windows release version as an example:\n\n```\nPS C:\\Program Files\\ImageMagick-7.1.2-Q8\u003e .\\magick.exe -ping 1.svg null:\nPS C:\\Program Files\\ImageMagick-7.1.2-Q8\u003e echo $LASTEXITCODE\n-1073741571\n```\n\nThe error code -1073741571 indicates a crash due to a stack overflow.\n\n### Impact\n\nThis is a DoS vulnerability and all applications using Magick to parse SVG files are affected.","modified":"2026-07-30T18:35:35.788832019Z","published":"2026-07-30T16:02:27.435Z","upstream":["CVE-2025-68618","EUVD-2025-205813","GHSA-p27m-hp98-6637"],"database_specific":{"license":"CC-BY-4.0","sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-68618","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68618","database_specific":{"status":"Analyzed"},"id":"CVE-2025-68618","imported":"2026-07-30T14:08:44.533Z","modified":"2026-06-17T09:59:21.363Z","published":"2025-12-30T17:15:43.463Z"},{"url":"https://api.github.com/advisories/GHSA-p27m-hp98-6637","html_url":"https://github.com/advisories/GHSA-p27m-hp98-6637","id":"GHSA-p27m-hp98-6637","imported":"2026-07-30T14:10:11.474Z","modified":"2025-12-30T22:54:34Z","published":"2025-12-30T22:54:32Z"},{"url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2025-205813","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-205813","id":"EUVD-2025-205813","imported":"2026-07-30T14:08:55.606Z","modified":"2025-12-30T18:11:48Z","published":"2025-12-30T16:14:24Z"}]},"references":[{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/commit/6f431d445f3ddd609c004a1dde617b0a73e60beb"},{"type":"WEB","url":"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-p27m-hp98-6637"},{"type":"WEB","url":"https://github.com/advisories/GHSA-p27m-hp98-6637"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68618"}],"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":"7.1.2023+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-931.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"ylwango613","contact":["https://github.com/ylwango613"],"type":"REPORTER"}]}