What is CVE-2026-8013?

CVE-2026-8013 is a medium-severity vulnerability in Apple Macos, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-05-06.

How severe is CVE-2026-8013?

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

Improper input validation in Apple Macos

CVE-2026-8013

Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)

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

EPSS: 0.000 (14.3th 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

Apple Macos
Google Chrome — versions 148.0.7778.96
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2026-8013?: CVE-2026-8013 is a medium-severity vulnerability in Apple Macos, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-05-06.
How severe is CVE-2026-8013?: Medium severity. CVSS v3 base score is 4.3 out of 10.