What’s Vulnerable › Vulnerabilities

CVE-2022-28286

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-12-22 · updated 2026-06-17
• Weakness: CWE-1021

Description

Due to a layout change, iframe contents could have been rendered outside of its border. This could have led to user confusion or spoofing attacks. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Affected products

• Mozilla Firefox: before 99.0 — fixed in 99.0
• Mozilla Firefox ESR: before 91.8 — fixed in 91.8
• Mozilla Thunderbird: before 91.8 — fixed in 91.8

How to fix

Upgrade to a fixed version: Mozilla Firefox 99.0; Mozilla Firefox ESR 91.8; Mozilla Thunderbird 91.8. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1735265
• https://www.mozilla.org/security/advisories/mfsa2022-13/
• https://www.mozilla.org/security/advisories/mfsa2022-14/
• https://www.mozilla.org/security/advisories/mfsa2022-15/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1735265
• https://www.mozilla.org/security/advisories/mfsa2022-13/
• https://www.mozilla.org/security/advisories/mfsa2022-14/
• https://www.mozilla.org/security/advisories/mfsa2022-15/

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