SixLabors ImageSharp up to 4.1.1 ICC CLUT Parsing IccDataReader.ReadClutF32 allocation of resources

Summaryinfo

A vulnerability was found in SixLabors ImageSharp up to 4.1.1 and classified as problematic. The affected element is the function IccDataReader.ReadClutF32 of the component ICC CLUT Parsing. Executing a manipulation can lead to allocation of resources. This vulnerability is handled as CVE-2026-106114. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in SixLabors ImageSharp up to 4.1.1. It has been declared as problematic. This vulnerability affects the function IccDataReader.ReadClutF32 of the component ICC CLUT Parsing. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

ImageSharp is a 2D graphics library. From 1.0.0-beta0001 until 4.1.2, ICC CLUT parsing calculates allocation sizes from attacker-declared channel and grid dimensions before confirming that the profile contains the declared values. IccDataReader.ReadClutF32 can request a large float array, and earlier public IccProfile.Entries parsing paths can allocate a large jagged representation, from a short truncated profile. In version 4, automatic image conversion reaches the parser when DecoderOptions.ColorProfileHandling is Convert; the default Preserve mode avoids that conversion path. The demonstrated impact is memory pressure and input-validation failure, not unhandled process termination. This issue is fixed in version 4.1.2.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-106114 since 10/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 4.1.2 eliminates this vulnerability.

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Productinfo

Vendor

• SixLabors

Name

• ImageSharp

Version

• 4.1.0
• 4.1.1

Website

• Product: https://github.com/SixLabors/ImageSharp/

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