> OpenAI did not lead this

Again:

> as part of our Patch the Planet initiative

To elaborate:

https://openai.com/index/patch-the-planet/

> We are introducing Patch the Planet

> [...]

> we will be partnering with HackerOne and Calif who are helping us take our efforts further with vulnerability triage, coordinated disclosure, and additional focused vulnerability discovery efforts

Calif found the vulnerability while working under an initiative lead by OpenAI, using publicly available AI tools developed by OpenAI.