What is CVE-2026-13984?

CVE-2026-13984 is a medium-severity vulnerability in Google Chrome, classified under Authentication Bypass by Spoofing. CVSS score: 4.3/10. Published 2026-06-30.

How severe is CVE-2026-13984?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Google Chrome

CVE-2026-13984

Incorrect security UI in TabStrip in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

EPSS: 0.002 (8.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Google Chrome — versions 150.0.7871.47

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing
CWE-451 — User Interface (UI) Misrepresentation of Critical Information

References

chrome-cve-admin@google.com (Release Notes)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-13984?: CVE-2026-13984 is a medium-severity vulnerability in Google Chrome, classified under Authentication Bypass by Spoofing. CVSS score: 4.3/10. Published 2026-06-30.
How severe is CVE-2026-13984?: Medium severity. CVSS v3 base score is 4.3 out of 10.