CVE-2026-112398Critical· 9.2▾ MidnightPillow is a Python imaging library. Prior to 13.0.0, Pillow's FlashPix JPEG-tile decoder can write decoded scanlines beyond the allocated tile buffer. FlashPix (FPX) JPEG decoding selects raw mode LA with two bytes per pixel, while an un…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.6 · likelihood 0 · exploitation 0
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Pillow is a Python imaging library. Prior to 13.0.0, Pillow's FlashPix JPEG-tile decoder can write decoded scanlines beyond the allocated tile buffer. FlashPix (FPX) JPEG decoding selects raw mode LA with two bytes per pixel, while an unrecognized JPEG mode can be decoded as JCS_UNKNOWN with four components, causing ImagingJpegDecode to write four-component scanlines into the two-byte tile buffer. An attacker can supply a crafted OLE2 FlashPix file to an application with the optional olefile dependency installed that opens or thumbnails untrusted input. This can corrupt heap memory and may allow arbitrary code execution. This issue is fixed in version 13.0.0.
Pillow < 13.0.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-112403Critical· 9.2Pillow: Heap buffer overflow in ImagingJpegDecode
CVE-2026-112395Medium· 6.5Pillow tiled-TIFF decoder reads past tile buffer in copy4 (Unpack.c:1290)
CVE-2026-112393Critical· 9.2Pillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIO
CVE-2026-112397High· 8.7Pillow: Out-of-bounds access in _imagingmorph on a zero-width image
CVE-2026-112390High· 8.2Pillow: Infinite loop in MIC n_frames when the embedded TIFF
CVE-2026-112394Medium· 6.3Pillow: P;2L and P;4L decoders may read 1 to 3 bytes past the passed buffer size