This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-102995 →

UBUNTU-CVE-2026-102995

pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large source-code or destination-string to...

Original description

The description as published by the source.

pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large source-code or destination-string tokens in a font /ToUnicode mapping, causing pypdf/_cmap.py parse_bfchar to decode and retain oversized values during operations such as text extraction and consume excessive memory. This is a second follow-up to earlier /ToUnicode resource-consumption fixes and is limited to the remaining token-length path. This issue is fixed in version 6.18.1.

Source: OSV.dev (Open Source Vulnerabilities) OSV