CVE-2026-112999 Google CVE debrief

Who should care

Google Chrome users, particularly those with versions prior to 156.0.8078.47, should assess exposure and apply updates as needed. Operators of Google Chrome installations should review and apply updates to Google Chrome to version 156.0.8078.47 or later. Security teams and vulnerability management teams should prioritize patching vulnerable Google Chrome installations and verifying exposure.

Why it matters

CVE-2026-112999 is a use-after-free vulnerability in Google Chrome that allows remote attackers to execute arbitrary code inside the sandbox. Defenders should prioritize patching vulnerable installations and verifying exposure.

• Remote attackers may execute arbitrary code inside the sandbox
• Google Chrome users may be exposed to potential attacks
• Defenders should prioritize patching vulnerable Google Chrome installations
• Verification of Google Chrome version and exposure is necessary

Technical summary

CVE-2026-112999 is a use-after-free vulnerability in the API of Google Chrome prior to version 156.0.8078.47. This vulnerability allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability affects Google Chrome versions prior to 156.0.8078.47 and defenders should prioritize patching vulnerable installations and verifying exposure. Google Chrome users may be exposed to potential attacks and defenders should prioritize patching vulnerable Google Chrome installations.

Defensive priority

Medium

Recommended defensive actions

• Review and apply Google Chrome updates to version 156.0.8078.47 or later
• Assess exposure of Google Chrome installations to version 156.0.8078.47 and earlier
• Monitor Google Chrome for updates and apply patches as needed
• Confirm whether affected Google Chrome 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 Program record and NVD vulnerability detail page provide official information about CVE-2026-112999. Google Chrome versions prior to 156.0.8078.47 are affected by a use-after-free vulnerability in the API.

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.