CVE-2022-31736

Description

A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.17%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2022-20/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2022-22/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2022-21/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1735923 vendor advisory issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2022-31736?
CVE-2022-31736 has been scored as a critical severity vulnerability.
How to fix CVE-2022-31736?
To fix CVE-2022-31736, 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-2022-31736 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-31736 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-2022-31736?
CVE-2022-31736 affects Mozilla Thunderbird, Mozilla Firefox, Mozilla Firefox ESR.
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