EUVD-2026-93557

ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized output buffer...

EUVD-2026-93576

ImageSharp: EXR ZIP decoder can expose stale allocator data after a short inflate...

EUVD-2026-93553

ImageSharp: ICC LUT16 output channel count can write beyond Vector4...

EUVD-2026-93559

ImageSharp: BigTIFF IFD count can keep a decoder thread in a non-progressing loop...

EUVD-2026-93574

ImageSharp: TIFF CCITT T4 encoder can write past its compressed output buffer...

EUVD-2026-93554

ImageSharp: HistogramEqualization uses an unvalidated luminance as an unchecked histogram index...

EUVD-2026-93556

ImageSharp: ICC CLUT parsing allocates from unvalidated channel and grid dimensions...

ImageSharp: Tiled fax TIFF: tile buffer sized by TileWidth but fax decompressor writes scanlines of ImageWidth — heap OOB write

Summary When decoding a tiled TIFF with fax compression T4/T6/MH, DecodeTilesChunky allocates each tile buffer from TileWidth ceilTileWidthbpp/8TileLength bytes but constructs the fax decompressor with frame.Width: TiffDecompressorsFactory ignores the isTiled/tileWidth/tileHeight parameters...

EUVD-2026-93770

ImageSharp: Tiled fax TIFF: tile buffer sized by TileWidth but fax decompressor writes scanlines of ImageWidth — heap OOB write...

GHSA-V76P-62QX-WWQ2 ImageSharp: Tiled fax TIFF: tile buffer sized by TileWidth but fax decompressor writes scanlines of ImageWidth — heap OOB write

Summary When decoding a tiled TIFF with fax compression T4/T6/MH, DecodeTilesChunky allocates each tile buffer from TileWidth ceilTileWidthbpp/8TileLength bytes but constructs the fax decompressor with frame.Width: TiffDecompressorsFactory ignores the isTiled/tileWidth/tileHeight parameters...

EUVD-2026-93560

ImageSharp: CCITT fax decompression T4/Modified Huffman: unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp...

CVE-2026-106118

ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, tiled TIFF decoding allocates a destination buffer using TileWidth but TiffDecompressorsFactory.Create constructs T4, T6, and Modified Huffman decompressors using the full frame width. TiffDecoderCore.DecodeTilesChunky can therefore...

CVE-2026-106114

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...

CVE-2026-106116

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, ExifReader.ReadValues64 trusts the 64-bit BigTIFF IFD entry count and iterates once per declared entry. When fewer than 20 bytes remain, ExifReader.ReadValue64 returns without advancing the stream or terminating the outer loop, so a sma...

CVE-2026-106117

ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized...

CVE-2026-106115

ImageSharp is a 2D graphics library. From 2.1.0 until 4.1.2, the TIFF CCITT Group 4 encoder allocates Width times rowsPerStrip bytes even though T6BitCompressor.CompressStrip can emit encoded row data and two 12-bit end-of-facsimile-block codes beyond that capacity. TiffCcittCompressor.WriteCode...

CVE-2026-106112

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...

CVE-2026-106111

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 fu...

CVE-2026-106110

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, the TIFF CCITT Group 3 encoder allocates an undersized compressed-data buffer for narrow 1-bit images. TiffCcittCompressor.Initialize does not reserve enough space for the row data and T4 end-of-line codes, and...

CVE-2026-106113

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, decoding an attacker-supplied 32-bit floating-point TIFF as Image and applying HistogramEqualization can produce a non-finite or out-of-range luminance in ColorNumerics.GetBT709Luminance. GrayscaleLevelsRowOperation.Invoke uses the...