CVE-2026-113333 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments, especially in environments where extensions are used, should assess exposure and prioritize updating Chrome to version 156.0.8078.47 or later.

Why it matters

CVE-2026-113333 is a Medium severity memory corruption vulnerability in Google Chrome's Extensions. Defenders should prioritize verifying and updating Chrome, assessing exposure for users, and monitoring for potential exploitation attempts.

• Verify and update Google Chrome to version 156.0.8078.47 or later to prevent potential memory corruption
• Assess exposure for users who access the web via Chrome, especially in environments where extensions are used
• Monitor for potential exploitation attempts to prevent memory reading inside the sandbox

Technical summary

The vulnerability is a memory corruption issue in Google Chrome's Extensions, prior to version 156.0.8078.47. A remote attacker could potentially read memory inside the sandbox via a crafted HTML page. This issue has a Medium severity level according to Chromium. The vulnerability affects Google Chrome's Extensions and allows potential memory reading inside the sandbox via a crafted HTML page. Defenders should prioritize verifying and updating Google Chrome to version 156.0.8078.47 or later, and assess exposure for users who access the web via Chrome, especially in environments where extensions are used.

Defensive priority

Defenders should prioritize verifying and updating Google Chrome to version 156.0.8078.47 or later, and assess exposure for users who access the web via Chrome, especially in environments where extensions are used.

Recommended defensive actions

• Verify and update Google Chrome to version 156.0.8078.47 or later
• Assess exposure for users who access the web via Chrome, especially in environments where extensions are used
• 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 Chromium security severity indicate a Medium severity issue. The vulnerability allows potential memory reading inside the sandbox via a crafted HTML page. The issue is based on the CVE record and Chromium security severity, which classify it as Medium severity. There is no additional information available beyond the CVE record and Chromium security severity.

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.