What is CVE-2026-13886?

CVE-2026-13886 is a medium-severity vulnerability in Apple macOS, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2026-06-30.

How severe is CVE-2026-13886?

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

Vulnerability in Apple macOS

CVE-2026-13886

Insufficient policy enforcement in Isolated Web Apps in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)

Published 2026-06-30 · last modified 2026-07-01.

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: 0.003 (16.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352… (Vendor Advisory)
issues.chromium.org/issues/500475136 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-13886?: CVE-2026-13886 is a medium-severity vulnerability in Apple macOS, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2026-06-30.
How severe is CVE-2026-13886?: Medium severity. CVSS v3 base score is 6.5 out of 10.