← CVE Intelligence

CVE-2026-115580

pypdf: Possible long runtimes for large xref table header limits PUBLISHED

Description (CNA)

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.

Affected (CNA)

Vendor / productVersions
py-pdf / pypdfaffected < 6.21.2

CWE

CWE-834

References