CVE-2026-113174 Google CVE debrief

Who should care

System administrators, cybersecurity professionals, and users of Google Chrome, especially those in environments where browser security is critical, should assess their exposure and ensure that Chrome is updated to the latest version.

Why it matters

CVE-2026-113174 highlights a use-after-free vulnerability in Google Chrome's Extensions prior to version 156.0.8078.47, allowing remote attackers to execute arbitrary code within the sandbox via a crafted HTML page. This issue, classified as Medium severity by Chromium, emphasizes the importance of maintaining up-to-date browser and extension versions to prevent potential exploitation.

• Remote code execution within the sandbox could lead to potential data breaches or system compromise if exploited
• Keeping browser extensions and the browser itself up-to-date is crucial to prevent exploitation
• System administrators need to prioritize updating Chrome to prevent potential attacks
• Users of Chrome should be aware of the risks associated with outdated browser versions

Technical summary

The vulnerability exists in Google Chrome's Extensions feature, specifically a use-after-free issue that can lead to arbitrary code execution within the sandbox. This occurs when a remote attacker crafts an HTML page that exploits the vulnerability, potentially allowing them to execute code within the browser's sandbox environment. The issue, classified as Medium severity by Chromium, emphasizes the importance of maintaining up-to-date browser and extension versions to prevent potential exploitation. Keeping browser extensions and the browser itself up-to-date is crucial to prevent exploitation.

Defensive priority

High

Recommended defensive actions

• Update Google Chrome to version 156.0.8078.47 or later
• Ensure all Chrome extensions are up-to-date
• Monitor browser and extension updates for future vulnerabilities
• Implement sandboxing and isolation for critical systems
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability, including its existence in Chrome prior to version 156.0.8078.47 and the potential for arbitrary code execution within the sandbox.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.