CVE-2025-4087 | Mozilla Thunderbird up to 137.x XPath Parser out-of-bounds

A vulnerability classified as critical was found in Mozilla Thunderbird up to 137.x. This vulnerability affects unknown code of the component XPath Parser. The manipulation leads to out-of-bounds read.

This vulnerability was named CVE-2025-4087. The attack can be initiated remotely. There is no exploit available.

It is recommended to upgrade the affected component.