PT-2026-59648 · Pypi · Pypdf

Published

2026-07-13

·

Updated

2026-07-13

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact

An attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing an image using /FlateDecode with large size values.

Patches

This has been fixed in pypdf==6.10.2.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #3734.

Fix

Found an issue in the description? Have something to add? Feel free to write us 👾

Related Identifiers

PYSEC-2026-3026

Affected Products

Pypdf