CVE-2021-43530

Description

A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 11.15% Top 10%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2021-48/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1736886 issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2021-43530?
CVE-2021-43530 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43530?
To fix CVE-2021-43530, 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-2021-43530 being actively exploited in the wild?
It is possible that CVE-2021-43530 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43530?
CVE-2021-43530 affects Mozilla Firefox.
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