What is CVE-2026-11126?

CVE-2026-11126 is a medium-severity vulnerability in Apple Macos, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-06-04.

How severe is CVE-2026-11126?

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

Improper input validation in Apple Macos

CVE-2026-11126

Inappropriate implementation in DevTools in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severit…

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

EPSS: 0.001 (3.9th percentile) — read the EPSS interpretation.

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:L/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2026-11126?: CVE-2026-11126 is a medium-severity vulnerability in Apple Macos, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-06-04.
How severe is CVE-2026-11126?: Medium severity. CVSS v3 base score is 4.3 out of 10.