What’s Vulnerable › Vulnerabilities

CVE-2022-26382

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-12-22 · updated 2026-06-17
• Weakness: CWE-203

Description

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

How to fix

Upgrade to a fixed version: Mozilla Firefox 98.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1741888
• https://www.mozilla.org/security/advisories/mfsa2022-10/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1741888
• https://www.mozilla.org/security/advisories/mfsa2022-10/

Get alerted when CVE-2022-26382 or the next vulnerability affects your stack