## pypdf: Possible large memory usage for streams with multiple filters

- 種別: advisory
- 重大度: medium
- 関連技術: python, github
- CVE: CVE-2026-113795
- 公開日時: 2026-10-21T16:48:30.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-7mh2-4gg2-979f)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-7mh2-4gg2-979f

影響: pip:pypdf < 6.20.0 → 6.20.0
Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory consumption. This requires accessing any stream with a large amount of filters or multiple filters which pass around large amounts of data. Patches This has been fixed in [pypdf==6.20.0](https://github.com/py-pdf/pypdf/releases/tag/6.20.0). Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4173](https://github.com/py-pdf/pypdf/pull/4173).