CVE-2026-100787 | Mozilla Firefox up to 153.3/156 XUL sandbox

September 29, 2026 Yanac

A vulnerability was found in Mozilla Firefox up to 153.3/156. It has been rated as critical. Affected is an unknown function of the component XUL. This manipulation causes sandbox issue.

This vulnerability is registered as CVE-2026-100787. Remote exploitation of the attack is possible. No exploit is available.

Upgrading the affected component is advised.VulDB Recent EntriesRead More