CVE-2026-113058 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments should assess exposure and apply the necessary patches. This includes IT and security teams managing browser updates and configurations.

Why it matters

CVE-2026-113058 is a high-severity use-after-free vulnerability in Google Chrome's WebUI that could allow remote code execution inside the sandbox. Defenders managing Chrome deployments should assess exposure, apply patches, and verify sandboxing configurations.

• Remote code execution inside the sandbox requires verification of sandboxing effectiveness
• Potential for crafted HTML pages to be used in attacks requires monitoring for suspicious activity
• Applying patches for Google Chrome version 156.0.8078.47 or later is a high priority

Technical summary

The CVE-2026-113058 vulnerability is a use-after-free issue in Google Chrome's WebUI. This could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The Chromium security team has rated this vulnerability as High severity. The vulnerability affects Google Chrome prior to version 156.0.8078.47. The issue requires verification of sandboxing effectiveness and monitoring for suspicious activity. Applying patches for Google Chrome version 156.0.8078.47 or later is a high priority.

Defensive priority

High

Recommended defensive actions

• Assess exposure and apply the patch for Google Chrome version 156.0.8078.47 or later
• Review and update inventory of Chrome versions in use
• Verify sandboxing configurations and security settings
• 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

The CVE record and source item provide details about the vulnerability, including its description and affected versions. However, the CVSS score and severity are not provided. The vulnerability was reported by the Chromium security team with a high severity rating. The source item provides CVE-2026-113058 details. The official CVE Program record and NIST NVD detail page offer additional information. The CVE record was published on 2026-10-20T21:01:46.885Z and has not been modified since then.

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.