CVE-2026-100780 | Mozilla Firefox up to 115.41/140.16/153.3/156 DOM Core/HTML use after free

September 29, 2026 Yanac

A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 115.41/140.16/153.3/156. Impacted is an unknown function of the component DOM Core/HTML. Such manipulation leads to use after free.

This vulnerability is referenced as CVE-2026-100780. It is possible to launch the attack remotely. No exploit is available.

You should upgrade the affected component.VulDB Recent EntriesRead More