🛡️ CVE-2022-26382 — firefox

🟡 CVSS 4.3 — Medium ⚠️ Exploit Public CWE-203 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Affected software

CVE-2022-26382 is recorded against 1 package.

  • firefox (fixed in 98.0)

Timeline and source

Published on 22 December 2022 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

bugzilla.mozilla.org
www.mozilla.org
bugzilla.mozilla.org
www.mozilla.org

CVE-2022-26382 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE CWE-203
Public Exploit ⚠️ Yes
Source NVD
Published 2022-12-22
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
firefox — 98.0

Similar Threats

Exploit Protection

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CVE-2022-26382 carries CVSS 4.3 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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