## pypdf: Unvalidated JPEG image data loading

- 種別: advisory
- 重大度: low
- 関連技術: python, github
- CVE: CVE-2026-113786
- 公開日時: 2026-10-21T19:58:10.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-5hx5-vpf9-5wcv)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-5hx5-vpf9-5wcv

影響: pip:pypdf < 6.21.1 → 6.21.1
Impact An attacker who uses this vulnerability can craft a PDF which leads to arbitrary image parsers being called. This requires loading an image which claims to use the /DCTDecode filter (JPEG data). Users which do not have the optional Pillow dependency installed in their environment are not affected. Patches This has been fixed in [pypdf==6.21.1](https://github.com/py-pdf/pypdf/releases/tag/6.21.1). Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4222](https:/…