What is CVE-2026-91727?

CVE-2026-91727 is a high-severity vulnerability in Google Chrome, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 8.1/10. Published 2026-09-15.

How severe is CVE-2026-91727?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Google Chrome

CVE-2026-91727

Incorrect reference resolution in Extensions in Google Chrome on on Mac prior to 153.0.8010.47 allowed a local attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Google Chrome

Weakness classification (CWE)

CWE-706 — Use of Incorrectly-Resolved Name or Reference

References

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

Frequently asked questions

What is CVE-2026-91727?: CVE-2026-91727 is a high-severity vulnerability in Google Chrome, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 8.1/10. Published 2026-09-15.
How severe is CVE-2026-91727?: High severity. CVSS v3 base score is 8.1 out of 10.