CVE-2026-113318 Google CVE debrief

Who should care

Defenders responsible for Google Chrome deployments, incident response teams, and vulnerability management teams should assess exposure and prioritize remediation. This vulnerability has a high severity and requires immediate attention. The vulnerability was addressed in version 156.0.8078.47.

Why it matters

CVE-2026-113318 is a high-severity vulnerability in Google Chrome's ServiceWorker that allows remote attackers to execute arbitrary code inside the sandbox. Defenders should assess exposure, prioritize remediation, and verify sandboxing effectiveness.

• Remote code execution inside the sandbox
• Potential for attacker exploitation
• Need for urgent remediation of affected versions
• Verification of sandboxing effectiveness required

Technical summary

The CVE-2026-113318 vulnerability in Google Chrome's ServiceWorker allows remote attackers to execute arbitrary code inside the sandbox via crafted HTML pages. This memory corruption issue was addressed in version 156.0.8078.47. The vulnerability has a high severity and requires immediate attention from defenders responsible for Google Chrome deployments, incident response teams, and vulnerability management teams. Defenders should assess exposure, prioritize remediation, and verify sandboxing effectiveness. The official advisory and CVE record should be reviewed to validate affected scope, severity, and vendor guidance.

Defensive priority

High

Recommended defensive actions

• Assess exposure of Google Chrome installations to this vulnerability
• Prioritize remediation of affected Google Chrome versions
• Verify effectiveness of sandboxing controls
• Review and update incident response plans for potential exploitation
• 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

Evidence notes

Official CVE Program record and NIST NVD detail page provide information on the memory corruption vulnerability in Google Chrome's ServiceWorker. The CVE record was published on 2026-10-20T21:01:53.743Z and has not been modified since then. The vulnerability has a high severity and requires immediate attention from defenders. The official advisory and CVE record should be reviewed to validate affected scope, severity, and vendor guidance.

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.