CVE-2026-113118 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments, particularly in environments where exposure to untrusted web content is possible, should assess the risk of this vulnerability and prioritize patching.

Why it matters

CVE-2026-113118 is a memory corruption vulnerability in Google Chrome's Extensions that allows remote code execution within the sandbox. Defenders should assess exposure, prioritize patching for versions prior to 156.0.8078.47, and monitor for potential exploitation attempts. The vulnerability's impact is currently limited to sandbox-based execution, but sandbox escapes cannot be ruled out without further verification.

• Remote code execution within the sandbox requires verification of defensive controls.
• Potential for sandbox escape if combined with other vulnerabilities.
• Exposure assessment and patching priority for Google Chrome deployments.
• Monitoring for exploitation attempts targeting this vulnerability.

Technical summary

The vulnerability is a memory corruption issue in Google Chrome's Extensions, allowing remote attackers to execute arbitrary code within the sandbox via a crafted HTML page. This issue was reported with a Medium severity level by the Chromium security team and affects Google Chrome versions prior to 156.0.8078.47. The issue requires verification of defensive controls and patching for affected versions. The vulnerability's technical details are limited, but it is essential to assess exposure and prioritize patching for Google Chrome deployments.

Defensive priority

Defenders should prioritize assessing exposure and applying patches for Google Chrome versions prior to 156.0.8078.47, as this vulnerability allows remote code execution within the sandbox.

Recommended defensive actions

• Assess exposure of Google Chrome installations to this vulnerability, particularly for versions prior to 156.0.8078.47.
• Apply patches or updates to Google Chrome to ensure version 156.0.8078.47 or later is deployed.
• Monitor for potential exploitation attempts targeting this vulnerability.
• Review and update incident response plans to address potential sandbox escapes.
• 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 description, affected versions, and references to vendor advisories. The vulnerability was reported with a Medium severity level by the Chromium security team. There are no known exploits or attacks in the wild, but defenders should assess exposure and prioritize patching for Google Chrome versions prior to 156.0.8078.47. The source item provides additional context on the vulnerability, but its scope and impact require further verification.

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.