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CVE-2026-106112— ImageSharp: ICC LUT16 output channel count can write beyond Vector4

Quick assessment

Affected
SixLabors ImageSharp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ImageSharp 是一个二维图形库。在版本 4.0.0 至 4.1.2 期间，ICC LUT16 转换功能允许接受超过四个输出通道，尽管 ClutCalculator.Calculate 和 LutEntryCalculator.CalculateLut 使用 Vector4 来存储中间值及输出值。当 DecoderOptions.ColorProfileHandling 设置为 Convert 时，格式错误的内嵌配置文件可能导致插值和输出 LUT 操作为超出四个浮点数的目标通道（即每个声明的额外通道写入一个浮

CVSS 7.5 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
SixLabors ImageSharp >= 4.0.0, < 4.1.2 affected
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I. Basic Information for CVE-2026-106112

Vulnerability Information
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Vulnerability Title
ImageSharp: ICC LUT16 output channel count can write beyond Vector4
Source: CVE Program / CVE List V5
Vulnerability Description
ImageSharp is a 2D graphics library. From 4.0.0 until 4.1.2, ICC LUT16 conversion accepts more than four output channels even though ClutCalculator.Calculate and LutEntryCalculator.CalculateLut store intermediate and output values in Vector4. When DecoderOptions.ColorProfileHandling is set to Convert, a malformed embedded profile can direct interpolation and output-LUT operations to write one float per declared channel beyond the four-float destination. This can corrupt memory and terminate the process; the default Preserve mode does not run ICC conversion. This issue is fixed in version 4.1.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SixLabors ImageSharp >= 4.0.0, < 4.1.2 -

II. Public POCs for CVE-2026-106112

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III. Intelligence Information for CVE-2026-106112

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Other References for CVE-2026-106112 (4)

Same Patch Batch · SixLabors · 2026-10-06 · 9 CVEs total

CVE-2026-106110 7.5 HIGH ImageSharp: TIFF CCITT T4 encoder can write past its compressed output buffer
CVE-2026-106115 7.5 HIGH ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized output buffer
CVE-2026-106113 7.5 HIGH ImageSharp: HistogramEqualization uses an unvalidated luminance as an unchecked histogram
CVE-2026-106117 7.5 HIGH ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows s
CVE-2026-106118 7.5 HIGH ImageSharp: Tiled fax TIFF: tile buffer sized by TileWidth but fax decompressor writes sca
CVE-2026-106111 5.9 MEDIUM ImageSharp: EXR ZIP decoder can expose stale allocator data after a short inflate
CVE-2026-106114 5.3 MEDIUM ImageSharp: ICC CLUT parsing allocates from unvalidated channel and grid dimensions
CVE-2026-106116 5.3 MEDIUM ImageSharp: BigTIFF IFD count can keep a decoder thread in a non-progressing loop

IV. Related Vulnerabilities

Same product: ImageSharp
Same vendor: SixLabors
Same weakness: CWE-787

V. Comments for CVE-2026-106112

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