OpenAI coordinates disclosure of critical PHP flaws
OpenAI says an AI-assisted security effort helped uncover two critical PHP remote code execution vulnerabilities. The PHP project shipped emergency fixes for CVE-2026-109618 and CVE-2026-109619, both rated CVSS v4.0 9.2, with OpenAI framing the response as a test case for AI-era vulnerability coordination. The company also launched Patch the Planet with a disclosure framework, a Codex skill for PHP version checks, and subsidized Daybreak access for under-resourced defenders.
- OpenAI says the work created a Defender's Window in which maintainers and security providers could prepare fixes and protections before broad disclosure.
- The coalition included PHP, Wiz, Cloudflare and other partners contributing research, technical support, and coordination around the release.
- OpenAI is sharing a PHP version checker as a Codex skill to help operators identify potentially vulnerable PHP versions and determine which updates apply.
