CVE-2026-113794

published 2026-10-21

CVE-2026-113794: 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…

Priority P4 34 medium 6 CVSS 4.0

AV N AC L AT P PR N UI P VC N VI N VA H SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
py-pdf	pypdf	< 6.20.0	6.20.0
pypdf_project	pypdf	>= 0 < 6.20.0	6.20.0

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CWE-835