CVE-2022-26382: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

While the text displayed in Autofill tooltips cannot be directly read by JavaScript, the text was rendered using page fonts. Side-channel attacks on the text by using specially crafted fonts could have lead to this text being inferred by the webpage. This vulnerability affects Firefox < 98.

Affected products

• Mozilla Firefox: before 98.0 (fixed in 98.0)

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