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

- 種別: advisory
- 重大度: medium
- 関連技術: python, github
- CVE: CVE-2026-112391
- 公開日時: 2026-10-21T21:11:07.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-254f-3936-288h)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-254f-3936-288h

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