vulnerability
MFSA2022-05 Firefox: Security Vulnerabilities fixed in Firefox ESR 91.6 (CVE-2022-22759)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Feb 8, 2022 | Feb 9, 2022 | Aug 11, 2025 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Feb 8, 2022
Added
Feb 9, 2022
Modified
Aug 11, 2025
Description
If a document created a sandboxed iframe without <code>allow-scripts</code>, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.
Solution
mozilla-firefox-esr-upgrade-91_6
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