What is CVE-2016-5189?

CVE-2016-5189 is a medium-severity vulnerability in Google Chrome, classified under Improper Access Control. CVSS score: 6.5/10. Published 2016-12-18.

How severe is CVE-2016-5189?

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

Vulnerability in Google Chrome

CVE-2016-5189

Google Chrome prior to 54.0.2840.59 for Windows, Mac, and Linux; 54.0.2840.85 for Android permitted navigation to blob URLs with non-canonical origins, which allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via crafted HTML pages.

Published 2016-12-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Google Chrome
Chrome Prior To 54.0.2840.59 For Windows, Mac, And Linux; 54.0.2840.85 Android — versions Chrome prior to 54.0.2840.59 for Windows, Mac, and Linux; 54.0.2840.85 for Android

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

crbug.com/646278
www.securityfocus.com/bid/93528 (vdb-entry)
rhn.redhat.com/errata/RHSA-2016-2067.html (vendor-advisory)
security.gentoo.org/glsa/201610-09 (vendor-advisory)
chromereleases.googleblog.com/2016/10/stable-channel-update-for-desktop.html

Frequently asked questions

What is CVE-2016-5189?: CVE-2016-5189 is a medium-severity vulnerability in Google Chrome, classified under Improper Access Control. CVSS score: 6.5/10. Published 2016-12-18.
How severe is CVE-2016-5189?: Medium severity. CVSS v3 base score is 6.5 out of 10.