A heap buffer overflow has been found in the handling of embedded PNG bitmaps, introduced in FreeType version 2.6.
If you use option
FT_CONFIG_OPTION_USE_PNGyou should upgrade immediately.
We strongly recommend updating to Pillow 8.0.1 if you are using Pillow 8.0.0, which improved support for bitmap fonts.
In Pillow 7.2.0 and earlier bitmap fonts were disabled with
FT_LOAD_NO_BITMAP, but it is not
clear if this prevents the exploit and we recommend updating to Pillow 8.0.1.
Pillow 8.0.0 and earlier are potentially vulnerable releases, including the last release to support Python 2.7, namely Pillow 6.2.2.