CVE-2026-113301 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments should assess exposure and prioritize updating to the latest version. They should verify Chrome versions, review official advisories, and monitor for suspicious activity. This includes IT teams managing Chrome installations, security teams monitoring for potential threats, and operators responsible for maintaining system integrity. Updating to 156.0.8078.47 or later is crucial to remediate the .

Why it matters

CVE-2026-113301 is a memory corruption vulnerability in Google Chrome that could allow remote code execution inside the sandbox. Defenders should verify Chrome versions, update to the latest version, and monitor for suspicious activity.

• Verify Chrome versions to determine exposure
• Update to 156.0.8078.47 or later to remediate vulnerability
• Monitor for suspicious HTML pages to detect potential attacks

Technical summary

The vulnerability is caused by a memory corruption issue in WebAppInstalls in Google Chrome prior to 156.0.8078.47. A remote attacker could potentially execute arbitrary code inside the sandbox via a crafted HTML page. This issue is considered Medium severity by Chromium and affects Google Chrome deployments. Defenders should assess exposure and prioritize updating to the latest version. The CVE record was published on 2026-10-20T21:02:00.958Z and has not been modified since then. The NVD entry is currently unclassified.

Defensive priority

Defenders should prioritize verifying Chrome versions and updating to 156.0.8078.47 or later. They should also monitor for suspicious HTML pages and implement sandboxing measures.

Recommended defensive actions

• Verify Chrome versions and update to 156.0.8078.47 or later
• Monitor for suspicious HTML pages
• Implement sandboxing measures
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Track exceptions and retest remediated assets
• Confirm whether affected product deployments exist in managed environments

Evidence notes

The CVE record and Chromium security severity indicate a potential threat. However, details on exploitation and impact are limited. Defenders should verify Chrome versions, review official advisories, and monitor for suspicious activity. The vulnerability is considered Medium severity by Chromium, and its description mentions a crafted HTML page could allow remote code execution inside 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.