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CVE-2021-30558

HIGHCVSS 8.8/10EPSS 11.49%

Last modified

CVE-2021-30558 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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 estimates a 11.49% chance of exploitation in the next 30 days.

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)

Metrics

CVSS 3.1
8.8/10

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

EPSS Probability
11.49%

95.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
GoogleChrome< 91.0.4472.77

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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)
How severe is CVE-2021-30558?
CVE-2021-30558 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 11.49% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30558?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30558?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST