PT-2026-120665 · Py Pdf+1 · Pypdf

CVE-2026-113794

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Published

2026-10-21

·

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

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires an incomplete file which ends inside the xref table.

Patches

This has been fixed in pypdf==6.20.0.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #4170.

Notes

This has been reported through both the secure channel and as a public issue at #4169.

Fix

Infinite Loop

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Weakness Enumeration

Related Identifiers

CVE-2026-113794
GHSA-39MJ-JF6J-2QJ3

Affected Products

Pypdf