ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float
cve-program · CVE-2026-40183
PublishedImageMagick 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.
Read the publisher's advisoryeuvd · EUVD-2026-22114
PublishedImageMagick 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.
Read the publisher's advisorynvd · CVE-2026-40183
PublishedImageMagick 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.
Read the publisher's advisoryosv · GHSA-jvgr-9ph5-m8v4
PublishedThe JXL encoder has an heap write overflow when a user specifies that the image should be encoded as 16 bit floats.
Read the publisher's advisoryAffected versions, risk and source history
Related advisories and sources
Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2026-40183 · CVE overview and exploitation status
cve-program · CVE-2026-40183
- 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
euvd · EUVD-2026-22114
- 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
nvd · CVE-2026-40183
- https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4
- https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0
osv · GHSA-jvgr-9ph5-m8v4
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4
- https://nvd.nist.gov/vuln/detail/CVE-2026-40183
- https://github.com/ImageMagick/ImageMagick/commit/1c7767fc5f822c6edc104c1220d523e96fa20b5a
- https://github.com/ImageMagick/ImageMagick
- https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
- https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0
Related changes
Linked by CVE identifierNo related changes are available here.