What is CVE-2026-91735?

CVE-2026-91735 is a high-severity vulnerability in Google Chrome, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-09-15.

How severe is CVE-2026-91735?

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

Auth bypass in Google Chrome

CVE-2026-91735

Incorrect authorization in WebUI in Google Chrome prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Broken Access Control

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

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

chrome-cve-admin@google.com
chrome-cve-admin@google.com

Frequently asked questions

What is CVE-2026-91735?: CVE-2026-91735 is a high-severity vulnerability in Google Chrome, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-09-15.
How severe is CVE-2026-91735?: High severity. CVSS v3 base score is 8.3 out of 10.