CVE-2026-1837
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).
- Affected products
- Lcms2, Apple Macos, Red Os, Libjxl
- Libjxl Project Libjxl
- ≤ 0.11.1
- CVSS 3.1
- 8.8 HIGH
- EPSS
- 0.3% (20th percentile)
- Weakness
- CWE-770, CWE-787, CWE-805
- NVD status
- Modified
- Published
- 2026-02-11
- Attack patterns
- CAPEC-123
No indexed exploits for CVE-2026-1837 yet
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No exploit for CVE-2026-1837 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.