SixLabors ImageSharp up to 4.1.1 Exr Decompression ExrBaseDecompressor.UndoZipCompression information disclosure

Summaryinfo

A vulnerability categorized as problematic has been discovered in SixLabors ImageSharp up to 4.1.1. Affected is the function ExrBaseDecompressor.UndoZipCompression of the component Exr Decompression. Such manipulation leads to information disclosure. This vulnerability is referenced as CVE-2026-106111. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in SixLabors ImageSharp up to 4.1.1. Affected by this issue is the function ExrBaseDecompressor.UndoZipCompression of the component Exr Decompression. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

ImageSharp is a 2D graphics library. From 4.0.0 until 4.1.2, ExrBaseDecompressor.UndoZipCompression accepts a nonempty ZIP or ZIPS inflate result that is shorter than the EXR block's required size. ZipExrCompression.Decompress reconstructs the returned prefix while ExrDecoderCore processes the full expected block from a buffer obtained through Configuration.Default, allowing bytes retained from a completed prior ImageSharp operation to appear in decoded pixels. Applications that expose pixels or output from the later attacker-controlled EXR decode can disclose process-local image data. This issue is fixed in version 4.1.2.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-106111 since 10/06/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

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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