CVE-2026-40183CWE-122

ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float

Medium · published April 13, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
9.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00198 · 9.1th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-04-13T21:28Z
EPSS history
Timeline
  • 13 APR 21:28Z
    ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float
    cvelistv5