What is CVE-2026-11243?

CVE-2026-11243 is a medium-severity vulnerability in Apple Macos, classified under Origin Validation Error. CVSS score: 5.4/10. Published 2026-06-05.

How severe is CVE-2026-11243?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Apple Macos

CVE-2026-11243

Inappropriate implementation in Downloads in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Low)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.

Affected products

Apple Macos
Google Chrome — versions 149.0.7827.53
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

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

Frequently asked questions

What is CVE-2026-11243?: CVE-2026-11243 is a medium-severity vulnerability in Apple Macos, classified under Origin Validation Error. CVSS score: 5.4/10. Published 2026-06-05.
How severe is CVE-2026-11243?: Medium severity. CVSS v3 base score is 5.4 out of 10.