🛡️ CVE-2026-1837
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-805 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A specially-crafted file can cause libjxl's decoder to write pixel data to uninitialized unallocated memory. Soon after that data from another uninitialized unallocated region is copied to pixel data. This can be done by requesting color transformation of grayscale images to another grayscale color space. Buffers allocated for 1-float-per-pixel are used as if they are allocated for 3-float-per-pixel. That happens only if LCMS2 is used as CMS engine. There is another CMS engine available (selected by build flags).

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-805
Public Exploit ⚠️ Yes
Source NVD
Published 2026-02-11
Updated 2026-06-02
Modified 2026-04-14

Affected Packages

Software From version Fixed in
libjxl 0.9.0 0.11.1

References

Exploit, Issue Tracking, Patch https://github.com/libjxl/libjxl/issues/4549
Exploit, Issue Tracking, Patch https://github.com/libjxl/libjxl/issues/4549

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