CVE-2021-38497

Description

Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
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/mfsa2021-47/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2021-45/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2021-43/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1726621 permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-38497?
CVE-2021-38497 has been scored as a medium severity vulnerability.
How to fix CVE-2021-38497?
To fix CVE-2021-38497, 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-2021-38497 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-38497 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-2021-38497?
CVE-2021-38497 affects Mozilla Firefox, Mozilla Thunderbird, Mozilla Firefox ESR.
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