CVE-2026-84310: Pypdf Project Pypdf

Low severity, CVSS 3.3. EPSS: 0.1% chance of exploitation in the next 30 days.

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_doc_common.py _get_outline to consume long runtimes and large amounts of memory when retrieving document outlines with large numbers of entries or deeply nested reused paths because the traversal lacked global entry-count and nesting-depth limits. This issue is fixed in version 6.16.1.

Affected products

Published 2026-09-01. Last modified 2026-10-05.