CVE-2026-102996: Uncontrolled Resource Consumption

pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/font.py Font.collectttt1characterwidths to process entries beyond the 256 character codes meaningful for a simpl...