pypdf: Possible long runtimes/large memory usage when retrieving form fields

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 and/or long runtimes. This requires retrieving the form fields of a document. 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 [#4219](https://github.com/py-pdf/pypdf/pull/4219).

在 GitHub Advisory Database 阅读

2026/10/23 01:49，GitHub Advisory Database 发布了“pypdf: Possible long runtimes/large memory usage when retrieving form fields”（类型：漏洞公告）。严重程度为“中危”（medium）。相关技术：Python、GitHub。CVE：CVE-2026-113789。