CVE-2021-30558

Public Exploit

Description

Insufficient policy enforcement in content security policy in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chrome security severity: Medium)

8.8

CVSS

Severity: High

CVSS 3.1 •

EPSS 0.36%

Vendor Advisory googleblog.com Vendor Advisory crbug.com

Affected: Google Chrome

References

Link	Tags
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html	release notes vendor advisory
https://crbug.com/916326	issue tracking exploit vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-30558?: CVE-2021-30558 has been scored as a high severity vulnerability.
How to fix CVE-2021-30558?: To fix CVE-2021-30558, 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-2021-30558 being actively exploited in the wild?: It is possible that CVE-2021-30558 is being exploited or will be exploited in a near future based on public information. 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-2021-30558?: CVE-2021-30558 affects Google Chrome.

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