GPT-5.6 Sol and Gemini 4 Argon uncover critical PHP flaws affecting up to 70% of sites

OpenAI's GPT-5.6 Sol identified two critical PHP vulnerabilities with severity scores of 9.2, and security firm Wiz found the same flaws using Google's Gemini 4 Argon. The bugs could affect millions of websites, potentially up to 70% of the web, and fixes were coordinated after working exploits were demonstrated.

Why it matters: AI tools are now capable of discovering high‑severity software bugs, raising both security opportunities and risks for developers.