Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tree()

影響: pip:Pillow >= 5.1.0, < 13.0.0 → 13.0.0

PdfParser's get_value() can recurse without any limit and crash with an uncaught RecursionError. It is reachable through Image.save(im, fp= , format="PDF", append=True) when the existing PDF file is attacker-controlled. This is the same class of bug as https://github.com/advisories/GHSA-r73j-pqj5-w3x7 (the /Prev trailer chain loop, fixed earlier this year), in the same file, but in two different functions that fix did not touch. Details get_value() in src/PIL/PdfParser.py This is a clas…

GitHub Advisory Databaseで読む

2026/10/22 06:11、GitHub Advisory Databaseが「Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tree()」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「警告」(medium) です。関連する技術: Python、GitHub。CVE: CVE-2026-112391。