CVE-2026-42308

Pillow CVE-2026-42308 describes an integer overflow in font handling that occurs when a glyph advances by an excessively large amount. Affected is Pillow before version 12.2.0; the issue is resolved in 12.2.0. The CVSS vector indicates local, low complexity access with no privileges required and ...

CVE-2026-54059

Pillow (Python imaging library) contains CVE-2026-54059. The vulnerability affects PcfFontFile._load_bitmaps(), which reads glyph dimensions from the PCF METRICS section and passes them to Image.frombytes() without calling Image._decompression_bomb_check(). This can lead to excessive memory alloc...

CVE-2026-55379

Pillow (Python imaging library) is affected by CVE-2026-55379. In older releases, PIL/BdfFontFile.py:bdf_char() read BBX width/height from a BDF font and passed attacker-controlled values to Image.new() without invoking Image._decompression_bomb_check(), bypassing the library’s decompression bomb...

CVE-2026-55380

Pillow (Python imaging library) vulnerability: Prior to 12.3.0, in GdImageFile._open(), image dimensions were read from the GD 2.x header and stored in self._size without invoking Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation. Impact: potent...

CVE-2026-54060

The issue affects Pillow (Python imaging library). In FontFile.compile(), per-glyph images were assembled into a single bitmap using Image.new("1", (xsize, ysize)) without calling Image._decompression_bomb_check(), enabling an attacker to trigger excessive memory allocation during conversion or s...

CVE-2026-55798

Pillow vulnerability CVE-2026-55798 affects WindowsViewer.get_command() in Pillow prior to 12.3.0. It builds a shell command by unescaped file path injected into an f-string and passes it to subprocess.Popen(..., shell=True), enabling injection of arbitrary cmd.exe commands. Impact is limited to ...

CVE-2026-59199

Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.

CVE-2026-59205

Pillow is a Python imaging library. Prior to 12.3.0, Pillow's ImageCms.ImageCmsTransform.apply(im, imOut) API can trigger controlled native heap corruption when the caller supplies an output image whose mode does not match the transform's declared output mode. This issue is fixed in version 12.3.0.