Memory Consumption Vulnerability in pypdf Library by PyPDF

CVE-2026-113789

What is CVE-2026-113789?

The pypdf library, a widely used open-source PDF processing tool in Python, is susceptible to a vulnerability that allows an attacker to create a specially crafted PDF file. This manipulated document can lead to excessive memory usage or prolonged execution times when an application attempts to retrieve the form fields contained within. The issue is effectively addressed in version 6.21.0, emphasizing the importance of keeping this library updated to prevent potential denial of service scenarios and maintain efficiency in PDF handling.

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