What is CVE-2026-87463?

CVE-2026-87463 is a medium-severity vulnerability in Google Chrome, classified under Incorrect Authorization. CVSS score: 4.8/10. Published 2026-09-09.

How severe is CVE-2026-87463?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Auth bypass in Google Chrome

CVE-2026-87463

Incorrect authorization in Certificate in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker to potentially spoof address bar via crafted network traffic. (Chromium security severity: Low)

Vulnerability class: Broken Access Control

Published 2026-09-09 · last modified 2026-09-09.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (8.7th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Google Chrome

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/517776674 (Permissions Required)

Frequently asked questions

What is CVE-2026-87463?: CVE-2026-87463 is a medium-severity vulnerability in Google Chrome, classified under Incorrect Authorization. CVSS score: 4.8/10. Published 2026-09-09.
How severe is CVE-2026-87463?: Medium severity. CVSS v3 base score is 4.8 out of 10.