External risk intelligence

Chrome Use After Free Vulnerability Allows Arbitrary Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-102304

The vulnerability exists within the Google Chrome web browser and requires a user to navigate to a crafted HTML page. It is a client-side application vulnerability rather than a service-side or network-facing component designed to be reachable from the public internet.

Use After Free

Google Chrome

before 154.0.8037.92

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This vulnerability relates to a use-after-free flaw in how Google Chrome handles passwords. It could allow an attacker to execute code outside of the browser's secure sandbox if a user visits a specially crafted webpage. The Chromium security team has classified this as a High severity issue.

  • Browser password flaw allows outside code execution.
  • Attackers could exploit user browsing habits.
  • Confirm relevance and understand potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could leverage this vulnerability by luring a user into visiting a specially crafted web page. If the user accesses this page while using a vulnerable version of Chrome, the browser's password handling component could be manipulated, potentially allowing the attacker to execute their own code and bypass security boundaries.

  • Requires user to visit a malicious page.
  • Triggers a use-after-free flaw.
  • Allows arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

A use-after-free vulnerability in Chrome's password handling could allow an attacker to execute arbitrary code outside the browser's sandbox when a user visits a malicious HTML page. This could impact the confidentiality and integrity of data handled by the browser.

  • User-controlled data.
  • Visiting a malicious HTML page.
  • Code execution outside the sandbox.

Operational Fix

Recommended remediation, mitigation, and detection steps

Google Chrome's "use after free" vulnerability in its password handling requires immediate attention from teams responsible for end-user computing and application security. The first practical step is to identify all Chrome installations, confirm their exposure to crafted HTML pages, and prioritize remediation for critical assets or those with wider user bases.

  • Identify Chrome owners and scope.
  • Verify user exposure to crafted pages.
  • Plan remediation or risk reduction.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is Google Chrome in the context of this vulnerability?

Google Chrome is a widely used web browser that renders HTML pages and manages user data, such as saved passwords. This vulnerability specifically affects the browser's internal component responsible for password management, which is a core feature designed to securely store and auto-fill credentials for websites.

What does a use-after-free vulnerability mean for CVE-2026-102304?

This vulnerability is a 'use-after-free' error, categorized as CWE-416. It occurs when the browser continues to use a piece of computer memory after that memory has been cleared or released. If an attacker can manipulate this process, they may be able to force the browser to execute unauthorized commands or arbitrary code.

How does an attacker trigger this Chrome vulnerability?

An attacker triggers this flaw by luring a user to visit a specially crafted, malicious HTML page. It is not triggered by normal, safe browsing activities or by simply having the browser installed; the code execution only occurs if the user actively interacts with the malicious webpage while using an unpatched version of Chrome.

Is my browser installation at risk based on Halo Surface Signal?

According to Halo Surface Signal, this is a client-side vulnerability rather than a service-side one, making it very unlikely to be reachable as a public-facing network service. You should primarily care if your users frequently visit untrusted websites, as the risk depends on user interaction rather than direct internet-facing exposure.

How should I respond to this security update?

The most effective way to secure your environment is to ensure all Chrome installations are updated to version 154.0.8037.92 or higher. Start by identifying all systems running older versions of Chrome within your organization and prioritize deploying the latest stable channel update provided by Google to resolve the flaw.

References