CVE-2026-113148 Google CVE debrief

Who should care

Google Chrome users and administrators, security teams and incident responders, and IT teams responsible for managing and securing Google Chrome deployments. These stakeholders should be aware of the potential risks associated with this vulnerability and take necessary actions to mitigate them.

Why it matters

CVE-2026-113148 is a memory corruption vulnerability in Google Chrome's WebUI that could allow a remote attacker to potentially execute arbitrary code inside the sandbox. This vulnerability requires attention from Google Chrome users and administrators, security teams, and incident responders.

• Potential execution of arbitrary code inside the sandbox
• Possible bypass of security controls
• Potential data theft or unauthorized access
• Verification of sandboxing configuration and security controls

Technical summary

Memory corruption in WebUI in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability is a result of improper memory management in the WebUI component of Google Chrome. This could lead to potential execution of arbitrary code inside the sandbox, bypass of security controls, and potential data theft or unauthorized access. The vulnerability requires attention from Google Chrome users and administrators, security teams, and incident responders.

Defensive priority

High

Recommended defensive actions

• Update Google Chrome to version 156.0.8078.47 or later
• Review and verify the sandboxing configuration for Google Chrome
• Monitor for suspicious activity and potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

Official CVE Program record and NIST NVD detail page provide information on the vulnerability. Google Chrome releases blog post and Chromium issue tracker provide additional context. The CVE record was published on 2026-10-20T21:02:19.987Z and has not been modified since then. The official advisory from Google Chrome and the CVE Program record serve as the primary sources for this vulnerability. Defenders should verify the affected scope, severity, and vendor guidance.

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.