CVE-2026-28231 pillow_heif Has Integer Overflow in Encode Path Buffer Validation that Leads to Heap Out-of-Bounds Read

pillowheif is a Python library for working with HEIF images and plugin for Pillow. Prior to version 1.3.0, an integer overflow in the encode path buffer validation of pillowheif.c allows an attacker to bypass bounds checks by providing large image dimensions, resulting in a heap out-of-bounds rea...

CVE-2026-28231 pillow_heif Has Integer Overflow in Encode Path Buffer Validation that Leads to Heap Out-of-Bounds Read

pillowheif is a Python library for working with HEIF images and plugin for Pillow. Prior to version 1.3.0, an integer overflow in the encode path buffer validation of pillowheif.c allows an attacker to bypass bounds checks by providing large image dimensions, resulting in a heap out-of-bounds rea...