What is CVE-2026-87597?

CVE-2026-87597 is a medium-severity vulnerability in Google Chrome, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.8/10. Published 2026-09-09.

How severe is CVE-2026-87597?

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

Vulnerability in Google Chrome

CVE-2026-87597

UI misrepresentation in CustomTabs in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker to spoof address bar via a co-installed app. (Chromium security severity: Low)

Published 2026-09-09 · last modified 2026-09-10.

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: 0.003 (17.3th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.3% 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

Google Chrome

Weakness classification (CWE)

CWE-451 — User Interface (UI) Misrepresentation of Critical Information

References

chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/533018632 (Permissions Required)

Frequently asked questions

What is CVE-2026-87597?: CVE-2026-87597 is a medium-severity vulnerability in Google Chrome, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.8/10. Published 2026-09-09.
How severe is CVE-2026-87597?: Medium severity. CVSS v3 base score is 4.8 out of 10.