Adobe secured a database with 7.5 million records belonging to Adobe Creative Cloud users. The cache was not protected in any way, allowing anyone access to client information if they knew how to find it. The details included are not highly sensitive but they could be used to launch better-crafted phishing campaigns against customers whose data was exposed. Adobe reacted quickly and secured the Elasticsearch database on the same day. The size of the cache, according to a screenshot provided by the researchers, is close to 86GB.
Source: https://www.bleepingcomputer.com/news/security/75-million-records-of-adobe-creative-cloud-user-data-exposed/