CVE-2026-113289 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments should assess exposure and prioritize updating to the fixed version. This includes reviewing input validation best practices, monitoring for exploitation attempts, and ensuring that secure coding practices are in place. Additionally, security teams and vulnerability management teams should be aware of the potential impact and take necessary actions to mitigate the vulnerability.

Why it matters

Defenders should care about CVE-2026-113289 due to the potential for remote code execution inside the sandbox in Google Chrome prior to 156.0.8078.47, requiring updates and secure coding practices review.

• Potential for remote code execution inside the sandbox.
• Need for input validation best practices review.
• Priority for updating Chrome to the fixed version.

Technical summary

The CVE record and source item describe an improper input validation vulnerability in PerformanceAPIs in Google Chrome prior to 156.0.8078.47. This vulnerability could potentially allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability requires updates to Chrome and a review of secure coding practices for input validation. Defenders should prioritize verifying Chrome versions and updating to the fixed version, while also monitoring for potential exploitation attempts.

Defensive priority

Defenders should prioritize verifying Chrome versions and updating to 156.0.8078.47 or later.

Recommended defensive actions

• Verify Chrome versions and update to 156.0.8078.47 or later.
• Review and implement secure coding practices for input validation.
• Monitor for potential exploitation attempts.
• 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.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on an improper input validation vulnerability in PerformanceAPIs in Google Chrome prior to 156.0.8078.47. This vulnerability could allow remote attackers to execute arbitrary code inside the sandbox via crafted HTML pages. Defenders should verify Chrome versions, review secure coding practices for input validation, and monitor for potential exploitation attempts. The source item and CVE record have been reviewed for accuracy.

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.