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 page. (Chromium security severity: Low)

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

Published 2026-06-05 · last modified 2026-07-23.

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.

EPSS exploit prediction

EPSS: 0.002 (4.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html (Vendor Advisory)
issues.chromium.org/issues/501757688 (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.