CVE-2021-37999

Name: CVE-2021-37999
Creator: NVD / NIST
Published: 2021-11-23T22:15:07.763+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2021-37999 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Insufficient data validation in New Tab Page in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to inject arbitrary scripts or HTML in a new browser tab via a crafted HTML page.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

Insufficient data validation in New Tab Page in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to inject arbitrary scripts or HTML in a new browser tab via a crafted HTML page.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.92%

55.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Google	Chrome	< 95.0.4638.69
Fedoraproject	Fedora	34
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.htmlRelease Notes, Vendor Advisory
https://crbug.com/1251541Exploit, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
https://www.debian.org/security/2022/dsa-5046Third Party Advisory
https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.htmlRelease Notes, Vendor Advisory
https://crbug.com/1251541Exploit, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
https://www.debian.org/security/2022/dsa-5046Third Party Advisory

Timeline

Published: Nov 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37999?

Insufficient data validation in New Tab Page in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to inject arbitrary scripts or HTML in a new browser tab via a crafted HTML page.

How severe is CVE-2021-37999?

CVE-2021-37999 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37999?

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-2021-37999?

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

Scan your code now

Source: NVD / NIST