CVE-2021-21221

Description

Insufficient validation of untrusted input in Mojo in Google Chrome prior to 90.0.4430.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.21% Top 25%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html third party advisory release notes
https://crbug.com/1195333 third party advisory
https://www.debian.org/security/2021/dsa-4906 third party advisory vendor advisory
https://security.gentoo.org/glsa/202104-08 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21221?
CVE-2021-21221 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21221?
To fix CVE-2021-21221, 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-2021-21221 being actively exploited in the wild?
It is possible that CVE-2021-21221 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21221?
CVE-2021-21221 affects Google Chrome.
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