CVE-2026-113078 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments should assess exposure and prioritize updates. This includes IT teams managing Chrome installations, security teams monitoring for potential exploitation attempts, and operators responsible for ensuring the security of Chrome-based systems. The vulnerability's medium severity and potential for remote code execution outside the sandbox make it a priority for defenders to verify Chrome versions and

Why it matters

CVE-2026-113078 is a medium-severity vulnerability in Google Chrome's Compositing component. Defenders managing Chrome deployments should assess exposure, prioritize updates to version 156.0.8078.47 or later, and monitor for potential exploitation attempts. The vulnerability allows remote code execution outside the sandbox via crafted HTML pages. Evidence is based on official CVE and source item records.

• Potential remote code execution outside the sandbox
• Requires verification of affected versions and exposure
• Update and patch management priority
• Monitoring for exploitation attempts

Technical summary

The vulnerability is due to improper input validation in the Compositing component of Google Chrome. This allows a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. The vulnerability affects Google Chrome prior to version 156.0.8078.47 and is classified as medium-severity. Defenders should focus on updating Chrome deployments and monitoring for exploitation attempts. The technical impact involves potential remote code execution outside the sandbox, emphasizing the need for prompt updates and verification of affected systems.

Defensive priority

Medium

Recommended defensive actions

• Update Google Chrome to version 156.0.8078.47 or later
• Review and verify the version of Google Chrome in use
• Monitor for potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• 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 and affected versions. Evidence is based on official CVE and source item records, with limitations on known affected scope and vendor guidance. Defenders should verify Chrome version exposure and review official advisories for update guidance. The vulnerability allows remote code execution via crafted HTML pages, emphasizing the need for prompt updates and monitoring.

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.