CVE-2026-17870: Insufficient validation of untrusted input in Cast

Published Jun 9, 2026
·
Updated

Chromium: CVE-2026-17870 Insufficient validation of untrusted input in Cast

Other sources

Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)

— 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 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 to a version that resolves this vulnerability.

    Fixed in 151.0.7922.72

Event History

Jun 9, 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-2026-17870?

The severity of CVE-2026-17870 is medium, with a CVSS score of 4.3.

2

How do I fix CVE-2026-17870?

To fix CVE-2026-17870, ensure that you update Google Chrome or Microsoft Edge to the latest version available.

3

What type of vulnerability is CVE-2026-17870?

CVE-2026-17870 is categorized as insufficient validation of untrusted input.

4

What impact does CVE-2026-17870 have?

CVE-2026-17870 allows an attacker on the local network to leak cross-origin data via malicious network traffic.

5

Which software is affected by CVE-2026-17870?

CVE-2026-17870 affects Google Chrome and Microsoft Edge (Chromium-based).

Company

Resources

Contact

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