## pypdf: Possible large memory usage when parsing arrays and dictionaries

- 種別: advisory
- 重大度: medium
- 関連技術: python, github
- CVE: CVE-2026-113790
- 公開日時: 2026-10-22T16:49:40.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-f54x-cmq8-qg57)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-f54x-cmq8-qg57

影響: pip:pypdf < 6.21.0 → 6.21.0
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing arrays and/or dictionaries with lots of elements. Patches This has been fixed in [pypdf==6.21.0](https://github.com/py-pdf/pypdf/releases/tag/6.21.0). Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4218](https://github.com/py-pdf/pypdf/pull/4218).