PT-2026-120663 · Py Pdf · Pypdf

CVE-2026-113792

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Published

2026-10-21

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Updated

2026-10-21

CVSS v4.0

6.0

Medium

VectorAV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, calling PdfWriter.find outline item on a crafted PDF with a cyclic outline hierarchy can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

Fix

Infinite Loop

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Weakness Enumeration

Related Identifiers

CVE-2026-113792

Affected Products

Pypdf