What is CVE-2026-5890?

CVE-2026-5890 is a medium-severity vulnerability in Apple Macos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-04-08.

How severe is CVE-2026-5890?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Apple Macos

CVE-2026-5890

Race in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Race Condition

EPSS: 0.000 (9.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

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

Frequently asked questions

What is CVE-2026-5890?: CVE-2026-5890 is a medium-severity vulnerability in Apple Macos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-04-08.
How severe is CVE-2026-5890?: Medium severity. CVSS v3 base score is 5.3 out of 10.