What is CVE-2026-8005?

CVE-2026-8005 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-2026-8005?

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

Improper input validation in Apple macOS

CVE-2026-8005

Insufficient validation of untrusted input in Cast in Google Chrome prior to 148.0.7778.96 allowed an attacker on the local network segment to bypass same origin policy via malicious network traffic. (Chromium security severity: Low)

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

Published 2026-05-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (4.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.7% 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: 0.002 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/496298665 (Permissions Required)

Frequently asked questions

What is CVE-2026-8005?: CVE-2026-8005 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-2026-8005?: Medium severity. CVSS v3 base score is 4.3 out of 10.