# OpenAI's GPT-5.6 Sol and Google's Gemini 4 Argon found critical PHP flaw affecting millions of websites

**Published:** October 21, 2026
**Author:** Matthias Bastian
**Source:** The Decoder
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/openai-s-gpt-5-6-sol-and-google-s-gemini-4-argon-found-critical-php-flaw

OpenAI's GPT-5.6 Sol discovered a critical PHP vulnerability as part of the Patch the Planet initiative that could affect millions of websites. Security firm Wiz independently found the same flaw using Google's Gemini 4 Argon. OpenAI warns that the same AI capabilities that find…

> From the original source: **The Decoder**
> [Read full article at The Decoder](https://the-decoder.com/openais-gpt-5-6-sol-and-gemini-4-argon-discovered-the-critical-php-vulnerability-affecting-millions-of-websites/)

**Tags:** #Google DeepMind #OpenAI

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