CVE-2026-113793

published 2026-10-21

CVE-2026-113793: pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter…

Priority P4 33 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 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
py-pdf	pypdf	< 6.20.1	6.20.1
pypdf_project	pypdf	>= 0 < 6.20.1	6.20.1

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CWE-835