Pillow multi-frame loaders can reuse stale native image storage after mode transitions

Pillow: Argument Injection in Ghostscript call, potentially leading into RCE

Pillow: Heap buffer overflow in ImagingJpegDecode

Pillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code execution

Pillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIO

Pillow: Out-of-bounds read via attacker-controlled row stride on Pillow's mmap path (McIdas AREA files)

Pillow: Heap buffer overflow writing JPEG comment after ICC profile fills buffer

Pillow: OOB read in TiffDecode.c tile and RGBA paths leaks heap memory into pixels

Pillow tiled-TIFF decoder reads past tile buffer in copy4 (Unpack.c:1290)

Pillow: P;2L and P;4L decoders may read 1 to 3 bytes past the passed buffer size

Pillow: Heap out-of-bounds write in Pillow `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`

Pillow: Heap over-read in WMF/EMF rendering via 16-bit dimension truncation (Windows builds)

Pillow: OOB Write with Invalid PSD Tile Extents (Integer Overflow)

Pillow PDF append accepts malformed shared page-tree DAG causing resource exhaustion

Pillow: ReDoS in XbmImagePlugin: 512-byte file stalls Image.open() for minutes

Pillow: Unbounded recursion parsing a PDF page tree or trailer chain (incomplete fix for CVE-2026-42310)

Pillow: Quadratic-time DoS in PDF save_all (PdfParser.next_object_id)

Pillow: Invalid free in FreeType glyph rendering when a stroker is active

Pillow: MSP RLE decoder expands a tiny file into unbounded memory

Pillow: Quadratic GIF comment copying during save

Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle

Pillow: NULL pointer dereference in Image.merge via an unvalidated band 0

Pillow: Double free in ImagingScaleAffine on calloc failure via Image.transform

Pillow: Out-of-bounds access in _imagingmorph on a zero-width image

Pillow: NULL dereference in ImagingExpand via rank filters on zero-size images

Pillow: Quadratic GIF comment concatenation allows DoS in Image.open()

Pillow: GIF seek keeps rejected size after DecompressionBombError, allowing DoS

Pillow: APNG background disposal allocates full canvas before decompression bomb check

Pillow: Heap use-after-free when encoding TIFF to an in-memory buffer

Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tree()

Pillow: Infinite loop in MIC n_frames when the embedded TIFF

Pillow: Decompression Bomb DoS via PdfParser.PdfStream.decode()

Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images

Pillow: Controlled heap out-of-bounds write in `ImageCmsTransform.apply()` via output mode mismatch

Pillow EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service

Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow

Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service

Pillow BdfFontFile`: `Image.new()` called without `_decompression_bomb_check()` — bomb protection bypass via font loading

Pillow GdImageFile decompression bomb protection bypass

Pillow: `FontFile.compile()`: `Image.new()` called without `_decompression_bomb_check()`

Pillow: PcfFontFile._load_bitmaps()`: `Image.frombytes()` called without `_decompression_bomb_check()` — bomb protection bypass via PCF font loading

Pillow is vulnerable to a FITS GZIP decompression bomb

Pillow: TIFF encoder ColorMap plane-size mismatch causes a heap out-of-bounds read

Pillow: Decompression-bomb protection bypass via multi-frame seek() in MPO and DCX (MpoImageFile.seek / DcxImageFile.seek)

Pillow: Decompression bomb check bypass in SpiderImagePlugin.seek() leads to unbounded allocation DoS

Pillow: PNG eXIf chunk makes EXIF parsing run in quadratic time

Pillow: Reachable undefined behavior in native integer operations, potentially leading to denial of service or logic integrity compromise

Pillow: TarIO negative size field causes infinite CPU-spin loop

Pillow: BMP RLE decoder memory-amplification DoS via unbounded delta escape / absolute mode

Pillow: TiffDecode returns uninitialized memory as pixels for short JPEG strips