CVE-2026-113789pypdf: Possible long runtimes/large memory usage when retrieving form fields

Descripción

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/py-pdf/pypdf/security/advisories/GHSA-6vvc-x485-93v7 Vendor Advisory
• https://github.com/py-pdf/pypdf/pull/4219 Issue TrackingPatch
• https://github.com/py-pdf/pypdf/commit/5ef728f0e16d225c853e89f861ba0a67402fe3f2 Patch
• https://github.com/py-pdf/pypdf/releases/tag/6.21.0 Release Notes