What is CVE-2026-5289?

CVE-2026-5289 is a critical-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 9.6/10. Published 2026-04-01.

How severe is CVE-2026-5289?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Use After Free in Apple macOS

CVE-2026-5289

Use after free in Navigation in Google Chrome prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Use-After-Free

EPSS: 0.003 (19.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Apple Macos
Google Chrome — versions 146.0.7680.178
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-5289?: CVE-2026-5289 is a critical-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 9.6/10. Published 2026-04-01.
How severe is CVE-2026-5289?: Critical severity. CVSS v3 base score is 9.6 out of 10.