pypdf: Possible large memory usage when parsing content streams

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 content streams with many small operations. 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).

GitHub Advisory Databaseで読む

2026/10/23 01:49、GitHub Advisory Databaseが「pypdf: Possible large memory usage when parsing content streams」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「警告」(medium) です。関連する技術: Python、GitHub。CVE: CVE-2026-113791。