CVE-2026-11034: Insufficient validation of untrusted input in Tab Group Sync

Published Mar 30, 2026
·
Updated

Chromium: CVE-2026-11034 Insufficient validation of untrusted input in Tab Group Sync

Other sources

Insufficient validation of untrusted input in Tab Group Sync in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via malicious network traffic. (Chromium security severity: Medium)

— MITRE

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Credit

Google

Affected Software

5 affected componentsFixes available
Google Chrome<149.0.7827.53
149.0.7827.53
Microsoft Edge<149.0.4022.53
All of the following
Google Chrome<149.0.7827.53
Google Android
Microsoft Edge (Chromium-based)<149.0.4022.53
149.0.4022.53

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 149.0.7827.53
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 149.0.4022.53
  3. Upgrade

    Upgrade Chromium-based Google Chrome for Android to a version that resolves this vulnerability.

    Fixed in 149.0.7827.53
  4. Compensating control

    If you are not yet on a fixed version, reduce exposure to malicious network traffic by restricting/monitoring the networks where affected Chromium-based Tab Group Sync data is ingested.

Event History

Mar 30, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jun 4, 2026
CVE Published
via MITRE·11:04 PM
Data Sourced
via MITRE·11:04 PM
DescriptionWeakness
Data Sourced
via NVD·11:17 PM
DescriptionSeverityWeaknessAffected Software
Jun 9, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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-2026-11034?

CVE-2026-11034 has a medium severity rating of 6.1 based on the CVSS score.

2

How do I fix CVE-2026-11034?

To fix CVE-2026-11034, update Google Chrome on Android to version 149.0.7827.53 or later.

3

What type of vulnerability is CVE-2026-11034?

CVE-2026-11034 is an insufficient validation vulnerability related to untrusted input, leading to potential cross-site scripting attacks.

4

Which software is affected by CVE-2026-11034?

CVE-2026-11034 affects Google Chrome on Android and Microsoft Edge (Chromium-based).

5

What could a remote attacker achieve with CVE-2026-11034?

A remote attacker could inject arbitrary scripts or HTML into the Tab Group Sync feature via malicious network traffic.

Company

Resources

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