## pypdf: Possible infinite loop when removing tree items

- 種別: advisory
- 重大度: medium
- 関連技術: python, github
- CVE: CVE-2026-113793
- 公開日時: 2026-10-21T16:55:10.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-9mx8-4j7g-633p)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-9mx8-4j7g-633p

影響: pip:pypdf < 6.20.1 → 6.20.1
Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires removing an object from a tree, for example an outline item. Patches This has been fixed in [pypdf==6.20.1](https://github.com/py-pdf/pypdf/releases/tag/6.20.1). Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4188](https://github.com/py-pdf/pypdf/pull/4188).