Resource exhaustion in Py-pdf Pypdf

CVE-2026-49461

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject…

Vulnerability class: DoS (Denial of Service)

Affected products

Weakness classification (CWE)

References