CVE-2021-37968: Inappropriate implementation in Background Fetch API

Published Aug 30, 2021
·
Updated

Inappropriate implementation in Background Fetch API in Google Chrome prior to 94.0.4606.54 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Credit

Maurice Dauer

Affected Software

7 affected componentsFixes available
debian/chromium<=90.0.4430.212-1~deb10u1
116.0.5845.180-1~deb11u1118.0.5993.70-1~deb11u1116.0.5845.180-1~deb12u1118.0.5993.70-1~deb12u1118.0.5993.70-1
Google Chrome<94.0.4606.54
94.0.4606.54
Google Chrome<94.0.4606.54
Fedoraproject Fedora=33
Fedoraproject Fedora=35
Debian Debian Linux=10.0
Debian Debian Linux=11.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/chromium to a version that resolves this vulnerability.

    Fixed in 116.0.5845.180-1~deb11u1Fixed in 118.0.5993.70-1~deb11u1Fixed in 116.0.5845.180-1~deb12u1Fixed in 118.0.5993.70-1~deb12u1Fixed in 118.0.5993.70-1
  2. Upgrade

    Upgrade Google Chrome (Trace Event) to a version that resolves this vulnerability.

    Fixed in 94.0.4606.54

Event History

Aug 30, 2021
CVE Published
12:00 AM
Oct 8, 2021
CVE Published
via MITRE·09:30 PM
Data Sourced
via MITRE·09:30 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2021-37968?

CVE-2021-37968 is categorized as a high severity vulnerability due to potential data leakage.

2

How do I fix CVE-2021-37968?

To fix CVE-2021-37968, users should update Google Chrome to version 94.0.4606.54 or later.

3

What versions of Chrome are affected by CVE-2021-37968?

CVE-2021-37968 affects Google Chrome versions prior to 94.0.4606.54.

4

Can CVE-2021-37968 be exploited remotely?

Yes, CVE-2021-37968 can be exploited remotely via a crafted HTML page.

5

What impact does CVE-2021-37968 have on user data?

CVE-2021-37968 allows a remote attacker to leak cross-origin data, compromising user privacy.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203