CVE-2026-100809 | Mozilla Firefox up to 153.3/156 DevTools cross-domain policy

A vulnerability has been found in Mozilla Firefox up to 153.3/156 and classified as problematic. Affected by this issue is some unknown functionality of the component DevTools. This manipulation causes permissive cross-domain policy with untrusted domains.

The identification of this vulnerability is CVE-2026-100809. It is possible to initiate the attack remotely. There is no exploit available.

The affected component should be upgraded.VulDB Recent EntriesRead More