CVE-2026-84310

pypdf , a pure-Python PDF library, is vulnerable to denial-of-service via crafted PDFs. The vulnerable component is the _get_outline function in pypdf/_doc_common.py, which lacks global entry-count and nesting-depth limits during outline traversal. A malicious PDF with a large number of outline e...

CVE-2026-84310 pypdf: Possible long runtimes/large memory usage when retrieving outlines

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/doccommon.py getoutline to consume long runtimes and large amounts of memory when retrieving document outlines with large numbers of entries or deeply nested reused paths becaus...