CVE-2022-22759

critical

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.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1739957

https://www.mozilla.org/security/advisories/mfsa2022-04/

https://www.mozilla.org/security/advisories/mfsa2022-05/

https://www.mozilla.org/security/advisories/mfsa2022-06/

Details

Source: Mitre, NVD

Published: 2022-12-22

CVSS v3

Base Score: 9.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Severity: Critical