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Fencer Intel
high 7.1

CVE-2016-5173 json

The extensions subsystem in Google Chrome before 53.0.2785.113 does not properly restrict access to Object.prototype, which allows remote a…

published 2016-09-25 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6124

cvss
7.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

The extensions subsystem in Google Chrome before 53.0.2785.113 does not properly restrict access to Object.prototype, which allows remote attackers to load unintended resources, and consequently trigger unintended JavaScript function calls and bypass the Same Origin Policy via an indirect interception attack.

Patch / fix

  • chromium-browser Ubuntu 14.04 LTS 53.0.2785.143-0ubuntu0.14.04.1.1142
  • chromium-browser Ubuntu 16.04 LTS 53.0.2785.143-0ubuntu0.16.04.1.1254

ubuntu advisories UBUNTU-CVE-2016-5173

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium-browser RHEL 6 EXTRAS 53.0.2785.113-1.el6

red hat advisories RHSA-2016:1905

  • chromium openSUSE Tumbleweed 55.0.2883.75-3.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • chromium Package Hub 12 53.0.2785.113-100.1

opensuse advisories openSUSE-SU-2024:10171-1openSUSE-SU-2024:12948-1openSUSE-SU-2016:2309-1openSUSE-SU-2016:2311-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-5173 updated cvss 6.5

chromium-browser: extension resource access

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 53.0.2785.113-1.el6 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 53.0.2785.113-1.el6 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 53.0.2785.113-1.el6
    fixed: vendor fix RHSA-2016:1905

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.