{"id":"CVE-2026-40183","state":"PUBLISHED","title":"ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float","description":"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.","publishedAt":"2026-04-13T21:28:20.797Z","updatedAt":"2026-04-14T19:27:39.187Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["ImageMagick ImageMagick"],"affected":[{"vendor":"ImageMagick","product":"ImageMagick","versions":[{"version":"< 7.1.2-19","status":"affected"}]}],"references":["https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4","https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19","https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40183.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40183","state":"PUBLISHED","datePublished":"2026-04-13T21:28:20.797Z","dateUpdated":"2026-04-14T19:27:39.187Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-09T20:59:17.619Z"},"containers":{"cna":{"title":"ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"ImageMagick","product":"ImageMagick","versions":[{"version":"< 7.1.2-19","status":"affected"}]}],"references":[{"url":"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4","name":"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19","name":"https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19","tags":["x_refsource_MISC"]},{"url":"https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0","name":"https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-13T21:28:20.797Z"},"source":{"advisory":"GHSA-jvgr-9ph5-m8v4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-40183","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-04-14T19:07:54.582119Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-14T19:27:39.187Z"}}]}}}