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Vulnerability record · CVE-2021-30558 · published 2 January 2023

CVE-2021-30558: Google chrome vulnerability

Google · Chrome

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 3.1 High EPSS 11% · top 4.1%
8.8CVSS 3.1 base score
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html Release NotesVendor Advisory
https://crbug.com/916326 ExploitIssue TrackingVendor Advisory
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html Release NotesVendor Advisory
https://crbug.com/916326 ExploitIssue TrackingVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-30558), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.