CVE-2021-29971

Description

If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port - would be granted that permission. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 90.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2021-28/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1713638 issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2021-29971?
CVE-2021-29971 has been scored as a critical severity vulnerability.
How to fix CVE-2021-29971?
To fix CVE-2021-29971, 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-2021-29971 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-29971 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-2021-29971?
CVE-2021-29971 affects Mozilla Firefox.
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