CVE-2026-17749: Insufficient validation of untrusted input in Extensions

Published Apr 8, 2026
·
Updated

Chromium: CVE-2026-17749 Insufficient validation of untrusted input in Extensions

Other sources

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape 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

4 affected componentsFixes available
Google Chrome<151.0.7922.72
Google Chrome<151.0.7922.71
151.0.7922.71
Microsoft Edge (Chromium-based)<151.0.4129.59
151.0.4129.59
Microsoft Edge<151.0.4129.59

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 151.0.7922.71
  2. Upgrade

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

    Fixed in 151.0.4129.59
  3. Upgrade

    Upgrade Google Chrome / Chromium-based browsers to a version that resolves this vulnerability.

    Fixed in 151.0.7922.72

Event History

Apr 8, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jul 30, 2026
CVE Published
via MITRE·12:19 AM
Data Sourced
via MITRE·12:19 AM
DescriptionWeakness
Data Sourced
via NVD·01:16 AM
DescriptionWeakness
Jul 31, 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-2026-17749?

The severity of CVE-2026-17749 is classified as medium with a score of 4.

2

How do I fix CVE-2026-17749?

To fix CVE-2026-17749, update Google Chrome or Microsoft Edge to version 151.0.7922.72 or later.

3

What type of vulnerability is CVE-2026-17749?

CVE-2026-17749 is categorized as an input validation vulnerability in Chrome Extensions.

4

Who is affected by CVE-2026-17749?

CVE-2026-17749 affects users of Google Chrome and Microsoft Edge that are running versions prior to 151.0.7922.72.

5

What can an attacker do with CVE-2026-17749?

An attacker can potentially perform a sandbox escape by convincing a user to install a malicious extension.

Company

Resources

Contact

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