CVE-2026-119204 | py-pdf pypdf up to 6.21.3 Page Tree Flattening memory allocation

October 29, 2026 Yanac

A vulnerability has been found in py-pdf pypdf up to 6.21.3 and classified as problematic. This impacts an unknown function of the component Page Tree Flattening. This manipulation causes uncontrolled memory allocation.

This vulnerability is tracked as CVE-2026-119204. The attack is possible to be carried out remotely. No exploit exists.

The affected component should be upgraded.VulDB Recent EntriesRead More