CVE-2026-113262 Google CVE debrief

Who should care

IT and cybersecurity professionals responsible for managing and securing Google Chrome installations and extensions should be aware of this vulnerability. This includes administrators in various organizations that use Chrome for browsing, as well as individuals who use Chrome for personal activities and want to ensure their browser is secure.

Why it matters

CVE-2026-113262 is a use-after-free vulnerability in Google Chrome's Extensions prior to version 156.0.8078.47. It allows remote attackers to potentially execute arbitrary code within the sandbox via a crafted HTML page. This issue, reported with Medium severity by Chromium, highlights the importance of keeping browser extensions and the browser itself up-to-date to prevent potential exploitation and unauthorized actions.

• Potential for arbitrary code execution within the sandbox environment, which could lead to unauthorized actions or data access
• Necessity for prompt updates to Chrome and its extensions to prevent exploitation
• Importance of maintaining awareness about browser and extension vulnerabilities for cybersecurity professionals and end-users alike

Technical summary

The CVE-2026-113262 vulnerability involves a use-after-free issue in Google Chrome's Extensions feature. This occurs when the browser's memory management fails to properly handle objects after they have been freed, potentially allowing attackers to execute arbitrary code within the sandbox environment. The vulnerability was reported with a Medium severity level by Chromium and affects Chrome versions prior to 156.0.8078.47.

Defensive priority

High

Recommended defensive actions

• Update Google Chrome to version 156.0.8078.47 or later
• Ensure all Chrome extensions are updated and compatible with the latest Chrome version
• Monitor browser and extension updates for future vulnerabilities
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, including its existence in Chrome versions prior to 156.0.8078.47. However, specific exploit details or victim information are not provided.

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.