What is CVE-2016-5193?

CVE-2016-5193 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2016-12-18.

How severe is CVE-2016-5193?

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

Improper input validation in Google Chrome

CVE-2016-5193

Google Chrome prior to 54.0 for iOS had insufficient validation of URLs for windows open by DOM, which allowed a remote attacker to bypass restrictions on navigation to certain URL schemes via crafted HTML pages.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Google Chrome
Chrome Prior To 54.0 For iOS — versions Chrome prior to 54.0 for iOS

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

crbug.com/639658
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-2016-5193?: CVE-2016-5193 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2016-12-18.
How severe is CVE-2016-5193?: Medium severity. CVSS v3 base score is 4.3 out of 10.