CVE-2021-30587

Name: CVE-2021-30587
Creator: NVD / NIST
Published: 2021-08-03T20:15:09.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 1.70%

Last modified Jun 17, 2026

CVE-2021-30587 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Inappropriate implementation in Compositing in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially spoof the contents of the Omnibox (URL bar) via a crafted HTML page.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.

Description

Inappropriate implementation in Compositing in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

1.70%

74.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Google	Chrome	< 92.0.4515.107
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35

References

Timeline

Published: Aug 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30587?

Inappropriate implementation in Compositing in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

How severe is CVE-2021-30587?

CVE-2021-30587 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30587?

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-2021-30587?

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

Scan your code now

Source: NVD / NIST