What is CVE-2026-11186?

CVE-2026-11186 is a medium-severity vulnerability in Apple Macos, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-06-04.

How severe is CVE-2026-11186?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Apple Macos

CVE-2026-11186

Inappropriate implementation in CSS in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Apple Macos
Google Chrome — versions 149.0.7827.53
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2026-11186?: CVE-2026-11186 is a medium-severity vulnerability in Apple Macos, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-06-04.
How severe is CVE-2026-11186?: Medium severity. CVSS v3 base score is 6.1 out of 10.