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Fencer Intel
medium 6.1

CVE-2021-37999 json

Insufficient data validation in New Tab Page in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to inject arbitrary scripts o…

published 4y ago modified 4mo ago also EUVD-2021-24472

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

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.

Patch / fix

  • Google Chrome 95.0.4638.69
  • chromium Debian 14, Debian 13, Debian 12 97.0.4692.71-0.1

debian advisories DEBIAN-CVE-2021-37999

  • chromium-browser Ubuntu 18.04 LTS 95.0.4638.69-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2021-37999

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium openSUSE Tumbleweed 95.0.4638.69-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • opera openSUSE Leap 15.4 NonFree 85.0.4341.28-lp154.2.5.1
  • opera openSUSE Leap 15.3 NonFree 83.0.4254.27-lp153.2.33.1
  • chromium Package Hub 15 SP3, openSUSE Leap 15.3, openSUSE Leap 15.2 95.0.4638.69-bp153.2.40.3

opensuse advisories openSUSE-SU-2024:11604-1openSUSE-SU-2024:12948-1openSUSE-SU-2022:0110-1openSUSE-SU-2022:0047-1openSUSE-SU-2021:1462-1

  • chromium Arch Linux 95.0.4638.69-1
  • vivaldi Arch Linux 4.3.2439.63-1

arch linux advisories AVG-2504AVG-2505

Is CVE-2021-37999 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-37999 updated cvss 8.8

chromium-browser: Insufficient data validation in New Tab Page

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • crbug.com https://crbug.com/1251541 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Google Chrome

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.