CVE-2026-96640

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, PdfParser.linearizepagetree in src/PIL/PdfParser.py treats a PDF /Pages graph as a tree without tracking duplicate indirect references. When Image.save..., format="PDF", append=True processes an attacker-controlled existing PDF whose...

Pillow: Quadratic-time DoS in PDF save_all (PdfParser.next_object_id)

============================================================================ Quadratic-time DoS in PDF saveall PdfParser.nextobjectid Location: src/PIL/PdfParser.py:629 in nextobjectid Commit: a707c6b21c313880d0771e54965d142dd42358b6...

EUVD-2026-107570

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, PdfParser.linearizepagetree in src/PIL/PdfParser.py treats a PDF /Pages graph as a tree without tracking duplicate indirect references. When Image.save..., format="PDF", append=True processes an attacker-controlled existing PDF whose...