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[ CVE-2026-113795 · Published 21 Oct 2026 ]

pypdf: Possible large memory usage for streams with multiple filters

CVSS 6.0 EPSS <1%Fix available

[ Description ]Official description

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, accessing a crafted PDF stream with a large number of filters or multiple filters that pass around large amounts of data can cause large memory consumption. This issue is fixed in version 6.20.0.

[ Fixes ]Fixes and patches

  • pypdf 6.20.0Fixed version · GitHub Advisories · pip package pypdf: upgrade to 6.20.0 or later (affected < 6.20.0)

[ Packages ]Affected open-source packages

[ References ]References