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[ CVE-2026-113794 · Published 21 Oct 2026 ]

pypdf: Possible infinite loop when hitting EOF in standard xref table

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, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. 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