ChatGPT was offline earlier due to a bug in an open-source library that allowed some users to see titles from another active user’s chat history.
It’s also possible that the first message of a newly-created conversation was visible in someone else’s chat history if both users were active around the same time.
It was also discovered that the same bug may have caused the unintentional visibility of payment-related information of 1.2% of the ChatGPT Plus subscribers who were active during a specific nine-hour window.
The number of users whose data was actually revealed to someone else is extremely low. and the company notified affected users that their payment information may have been exposed.
Source: https://openai.com/blog/march-20-chatgpt-outage
"id": "OPE333723",
"linkid": "openai",
"type": "Data Leak",
"date": "03/2023",
"severity": "60",
"impact": "3",
"explanation": "Attack with significant impact with internal employee data leaks"