CVE-2022-45415: Mozilla Firefox

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

When downloading an HTML file, if the title of the page was formatted as a filename with a malicious extension, Firefox may have saved the file with that extension, leading to possible system compromise if the downloaded file was later ran. This vulnerability affects Firefox < 107.

Affected products

• Mozilla Firefox: before 107.0 (fixed in 107.0)

Published 2022-12-22. Last modified 2026-06-17.