What is CVE-2026-6311?

CVE-2026-6311 is a high-severity vulnerability in Google Chrome, classified under CWE-457. CVSS score: 8.3/10. Published 2026-04-15.

How severe is CVE-2026-6311?

High severity. CVSS v3 base score is 8.3 out of 10.

Vulnerability in Google Chrome

CVE-2026-6311

Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security s…

EPSS: 0.000 (9.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Google Chrome — versions 147.0.7727.101
Microsoft Windows

Weakness classification (CWE)

CWE-457

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-6311?: CVE-2026-6311 is a high-severity vulnerability in Google Chrome, classified under CWE-457. CVSS score: 8.3/10. Published 2026-04-15.
How severe is CVE-2026-6311?: High severity. CVSS v3 base score is 8.3 out of 10.