CVE-2026-115580pypdf: Possible long runtimes for large xref table header limits

Beschreibung

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.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• https://github.com/py-pdf/pypdf/security/advisories/GHSA-gmh7-3g9r-mjh5
• https://github.com/py-pdf/pypdf/pull/4239
• https://github.com/py-pdf/pypdf/commit/a3061e34b169d34478d520f5f049c53cfb1482b2
• https://github.com/py-pdf/pypdf/releases/tag/6.21.2