CVE-2023-25741: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

When dragging and dropping an image cross-origin, the image's size could potentially be leaked. This behavior was shipped in 109 and caused web compatibility problems as well as this security concern, so the behavior was disabled until further review. This vulnerability affects Firefox < 110.

Affected products

• Mozilla Firefox: before 110.0 (fixed in 110.0)

Published 2023-06-02. Last modified 2026-06-17.