CVE-2026-17903: Insufficient policy enforcement in Chromecast

Published Mar 28, 2026
·
Updated

Chromium: CVE-2026-17903 Insufficient policy enforcement in Chromecast

Other sources

Insufficient policy enforcement in Chromecast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to inject scripts or HTML into a privileged page via malicious network traffic. (Chromium security severity: Low)

— NVD

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 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 Chromium (Google Chrome/Chromium-based Edge via Chromium) to a version that resolves this vulnerability.

    Fixed in 151.0.7922.72

Event History

Mar 28, 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
DescriptionSeverityWeakness
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-2026-17903?

The severity of CVE-2026-17903 is classified as medium with a CVSS score of 5.4.

2

How do I fix CVE-2026-17903?

To fix CVE-2026-17903, update Google Chrome or Microsoft Edge to the latest version, specifically version 151.0.7922.72 or later.

3

What type of vulnerability is CVE-2026-17903?

CVE-2026-17903 is categorized as an XSS (Cross-Site Scripting) vulnerability due to insufficient policy enforcement.

4

What are the potential risks associated with CVE-2026-17903?

The potential risks include the ability for attackers on the same local network to inject malicious scripts or HTML into privileged pages.

5

Which software is affected by CVE-2026-17903?

CVE-2026-17903 affects Google Chrome and Microsoft Edge browsers that use the Chromium engine.

Company

Resources

Contact

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