What is CVE-2026-12446?

CVE-2026-12446 is a medium-severity vulnerability in Google Chrome, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-06-17.

How severe is CVE-2026-12446?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Google Chrome

CVE-2026-12446

Inappropriate implementation in Passwords in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Google Chrome — versions 149.0.7827.155

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-12446?: CVE-2026-12446 is a medium-severity vulnerability in Google Chrome, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-06-17.
How severe is CVE-2026-12446?: Medium severity. CVSS v3 base score is 4.3 out of 10.