CVE-2022-26382 Information disclosure in Firefox

What is CVE-2022-26382?

CVE-2022-26382 is a medium-severity vulnerability in Mozilla Firefox, published on 22 Dec 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-203

Which versions are affected by CVE-2022-26382?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2022-26382?

Upgrade to a fixed version.

Is CVE-2022-26382 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-26382 exists.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-7mvx-m8hq-f37g, UBUNTU-CVE-2022-26382.