CVE-2026-9124: Medium Insufficient validation of untrusted input in Input

Published Mar 29, 2026
·
Updated

Chromium: CVE-2026-9123 Heap buffer overflow in Chromecast

Other sources

Insufficient validation of untrusted input in Input in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (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

Affected Software

7 affected componentsFixes available
Google Google Chrome<148.0.7778.179
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<148.0.3967.83
All of the following
Google Chrome<148.0.7778.178
Any of the following
Apple macOS
Linux Linux kernel
Microsoft Windows

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 148.0.7778.179Patch CVE-2026-9123
  2. Upgrade

    Upgrade Microsoft Edge (Chromium-based) to a version that resolves this vulnerability.

    Fixed in 148.0.7778.179Patch CVE-2026-9123

Event History

May 20, 2026
CVE Published
via MITRE·07:12 PM
Data Sourced
via MITRE·07:12 PM
DescriptionWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeaknessAffected Software
May 22, 2026
Data Sourced
via Microsoft·04:43 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·04:43 AM
DescriptionAffected Software
Aug 27, 2026
Data Sourced
12:00 AM
SeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the risk level of CVE-2026-9124?

CVE-2026-9124 has a risk level of 23 and a medium severity rating of 5.3.

2

How do I fix CVE-2026-9124?

To fix CVE-2026-9124, update Google Chrome or Microsoft Edge to version 148.0.7778.179 or later.

3

What affects users at risk from CVE-2026-9124?

Users of Google Chrome and Microsoft Edge prior to version 148.0.7778.179 are at risk from CVE-2026-9124.

4

What type of vulnerability is CVE-2026-9124?

CVE-2026-9124 is classified as an input validation vulnerability leading to heap buffer overflow.

5

What kind of attack does CVE-2026-9124 enable?

CVE-2026-9124 allows a remote attacker to leak cross-origin data via a crafted HTML page.

Company

Resources

Contact

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