What is CVE-2026-5901?

CVE-2026-5901 is a medium-severity vulnerability in Apple macOS, classified under CWE-602. CVSS score: 6.5/10. Published 2026-04-08.

How severe is CVE-2026-5901?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Apple macOS

CVE-2026-5901

Insufficient policy enforcement in DevTools in Google Chrome prior to 147.0.7727.55 allowed an attacker who convinced a user to install a malicious extension to bypass enterprise host restrictions for cookie modification via a crafted Chrome Extension. (Chromium security severity: Low)

Published 2026-04-08 · last modified 2026-07-24.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (10.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% 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-602

References

chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/479673903 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-5901?: CVE-2026-5901 is a medium-severity vulnerability in Apple macOS, classified under CWE-602. CVSS score: 6.5/10. Published 2026-04-08.
How severe is CVE-2026-5901?: Medium severity. CVSS v3 base score is 6.5 out of 10.