CVE-2026-106112

ImageSharp: ICC LUT16 output channel count can write beyond Vector4

HIGH
7.5
CVSS Score
Published: October 6, 2026 at 05:45 PM UTC
Updated: October 24, 2026 at 01:36 AM UTC
1 product affected across 1 vendorImageSharp

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (4)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-ffp7-56pq-64mr
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/SixLabors/ImageSharp/pull/3187
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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