What is CVE-2026-11267?

CVE-2026-11267 is a medium-severity vulnerability in Apple macOS, classified under CWE-602. CVSS score: 4.3/10. Published 2026-06-05.

How severe is CVE-2026-11267?

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

Vulnerability in Apple macOS

CVE-2026-11267

Insufficient policy enforcement in Extensions in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to bypass content security policy via a crafted Chrome Extension. (Chromium security severity: Low)

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

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:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (2.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-602

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html (Vendor Advisory)
issues.chromium.org/issues/500528267 (Permissions Required)

Frequently asked questions

What is CVE-2026-11267?: CVE-2026-11267 is a medium-severity vulnerability in Apple macOS, classified under CWE-602. CVSS score: 4.3/10. Published 2026-06-05.
How severe is CVE-2026-11267?: Medium severity. CVSS v3 base score is 4.3 out of 10.