Memory Allocation with Excessive Size Value Affecting pypdf package, versions [,6.10.2)
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Test your applications- Snyk IDSNYK-PYTHON-PYPDF-16097901
- published17 Apr 2026
- disclosed16 Apr 2026
- creditL3B4nk4
Introduced: 16 Apr 2026
New CVE NOT AVAILABLE CWE-789 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade pypdf to version 6.10.2 or higher.
Overview
pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value via the FlateDecode method when handling streams with a /Predictor value not equal to 1 and large predictor parameters. An attacker can cause excessive memory consumption by crafting a specially formed PDF file.