CVE-2026-11143: Heap buffer overflow in Extensions

Published Apr 11, 2026
·
Updated

Chromium: CVE-2026-11143 Heap buffer overflow in Extensions

Other sources

Out of bounds read in Extensions in Google Chrome on Linux prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from process memory via a crafted Chrome Extension. (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 (Chromium-based)
Patch available
Microsoft Edge<149.0.4022.52
All of the following
Google Chrome<149.0.7827.53
Linux Linux kernel

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 Google Chrome / Chromium to a version that resolves this vulnerability.

    Fixed in 149.0.7827.53

Event History

Apr 11, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jun 4, 2026
CVE Published
via MITRE·11:05 PM
Data Sourced
via MITRE·11:05 PM
DescriptionWeakness
Data Sourced
via NVD·11:17 PM
DescriptionSeverityWeaknessAffected Software
Jun 5, 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.

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Frequently Asked Questions

1

What is the severity of CVE-2026-11143?

The severity of CVE-2026-11143 is classified as medium with a CVSS score of 6.5.

2

What does CVE-2026-11143 affect?

CVE-2026-11143 affects Google Chrome and Microsoft Edge browsers on Linux systems prior to version 149.0.7827.53.

3

How do I fix CVE-2026-11143?

To fix CVE-2026-11143, update Google Chrome or Microsoft Edge to the latest version.

4

What kind of vulnerability is CVE-2026-11143?

CVE-2026-11143 is a heap buffer overflow vulnerability that allows for out-of-bounds read operations.

5

Can CVE-2026-11143 lead to data leakage?

Yes, CVE-2026-11143 can allow an attacker to obtain potentially sensitive information from process memory.

Company

Resources

Contact

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