What is CVE-2026-11273?

CVE-2026-11273 is a medium-severity vulnerability in Apple Macos, classified under Improper Input Validation. CVSS score: 6.1/10. Published 2026-06-05.

How severe is CVE-2026-11273?

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

XSS in Apple Macos

CVE-2026-11273

Insufficient validation of untrusted input in Omnibox in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to inject arbitrary scripts or HTML (UXSS) via a crafted HTML pa…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.002 (5.4th percentile) — read the EPSS interpretation.

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-20 — Improper Input Validation
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-2026-11273?: CVE-2026-11273 is a medium-severity vulnerability in Apple Macos, classified under Improper Input Validation. CVSS score: 6.1/10. Published 2026-06-05.
How severe is CVE-2026-11273?: Medium severity. CVSS v3 base score is 6.1 out of 10.