CVE-2022-22759

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.

Category

9.6
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.19%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2022-05/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2022-04/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2022-06/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1739957 vendor advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2022-22759?
CVE-2022-22759 has been scored as a critical severity vulnerability.
How to fix CVE-2022-22759?
To fix CVE-2022-22759, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-22759 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-22759 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-22759?
CVE-2022-22759 affects Mozilla Firefox, Mozilla Thunderbird, Mozilla Firefox ESR.
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