What is CVE-2021-30558?

CVE-2021-30558 is a high-severity vulnerability in Google Chrome. CVSS score: 8.8/10. Published 2023-01-02.

How severe is CVE-2021-30558?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Google Chrome

CVE-2021-30558

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)

EPSS: 0.115 (95.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Google Chrome — versions unspecified

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2021-30558?: CVE-2021-30558 is a high-severity vulnerability in Google Chrome. CVSS score: 8.8/10. Published 2023-01-02.
How severe is CVE-2021-30558?: High severity. CVSS v3 base score is 8.8 out of 10.