CVE-2026-59932 | PHPOffice PhpSpreadsheet Gzip memory allocation

July 26, 2026 Yanac

A vulnerability classified as problematic has been found in PHPOffice PhpSpreadsheet. This affects an unknown function of the component Gzip Handler. This manipulation causes uncontrolled memory allocation.

This vulnerability is tracked as CVE-2026-59932. The attack is possible to be carried out remotely. No exploit exists.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More