CVE-2026-76019 Google CVE debrief

Who should care

Administrators and users of Google Chrome, especially those in environments where social engineering attacks are a concern, should be aware of this vulnerability and take necessary actions to mitigate it. This includes reviewing and updating security policies, monitoring for suspicious activity, and ensuring that all users are educated about the risks associated with social engineering attacks. Additionally, security teams should prioritize patching or updating Google Chrome to version 151.0.7922.173 or later to prevent exploitation of this vulnerability.

Technical summary

The vulnerability CVE-2026-76019 is related to incorrect authorization in Workers in Google Chrome prior to version 151.0.7922.173. This issue allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass web origin policy via a crafted HTML page. The CVSS score for this vulnerability is 8.1, indicating a high severity. The incorrect authorization issue in Workers could allow unauthorized access to sensitive data or functionality.

Defensive priority

This vulnerability has a high CVSS score of 8.1 and is classified as High severity. It allows a remote attacker to bypass web origin policy via a crafted HTML page, which could lead to unauthorized access.

Recommended defensive actions

• Inventory and verify affected Google Chrome versions
• Apply patches or updates to Google Chrome
• Monitor for suspicious activity related to social engineering and crafted HTML pages
• Implement compensating controls to mitigate potential attacks
• Review and update security policies and procedures

Evidence notes

The CVE-2026-76019 record indicates that there is an incorrect authorization issue in Workers in Google Chrome prior to 151.0.7922.173. This issue allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass web origin policy via a crafted HTML page. The Chromium security severity is High. Evidence is limited to public sources and may not reflect the full scope or impact of this vulnerability. Defenders should verify affected Google Chrome versions, review security policies, and monitor for suspicious activity.

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.