What is CVE-2026-9989?

CVE-2026-9989 is a medium-severity vulnerability in Apple Macos, classified under Origin Validation Error. CVSS score: 6.3/10. Published 2026-05-28.

How severe is CVE-2026-9989?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Apple Macos

CVE-2026-9989

Inappropriate implementation in Media in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to bypass same origin policy via a crafted video file. (Chromium security severity: High)

EPSS: 0.000 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

Apple Macos
Google Chrome — versions 148.0.7778.216
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

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

Frequently asked questions

What is CVE-2026-9989?: CVE-2026-9989 is a medium-severity vulnerability in Apple Macos, classified under Origin Validation Error. CVSS score: 6.3/10. Published 2026-05-28.
How severe is CVE-2026-9989?: Medium severity. CVSS v3 base score is 6.3 out of 10.