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CVE-2026-1837— libjxl: Out-of-bounds write in grayscale color transformation when using LCMS2

EPSS 0.03% · P9
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I. Basic Information for CVE-2026-1837

Vulnerability Information
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Vulnerability Title
libjxl: Out-of-bounds write in grayscale color transformation when using LCMS2
Source: NVD (National Vulnerability Database)
Vulnerability 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).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不正确的长度值访问缓冲区
Source: NVD (National Vulnerability Database)
Vulnerability Title
libjxl 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libjxl是libjxl开源的一个 JPEG XL 图像格式参考实现。 libjxl存在安全漏洞，该漏洞源于解码器在处理特制文件时可能将像素数据写入未初始化的未分配内存，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Googlelibjxl 0.9 ~ 0.11.1 -

II. Public POCs for CVE-2026-1837

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III. Intelligence Information for CVE-2026-1837

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Same Patch Batch · Google · 2026-02-11 · 14 CVEs total

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CVE-2026-2314Google Chrome 安全漏洞
CVE-2026-2313Google Chrome 资源管理错误漏洞
CVE-2025-12474libjxl: Uninitialized memory read in decoder due to incorrect optimization in patch handli

IV. Related Vulnerabilities

Same product: libjxl
Same vendor: Google
Same weakness: CWE-805

V. Comments for CVE-2026-1837

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