In August 2025, GitHub experienced three significant incidents affecting its services, highlighting vulnerabilities in its database migration processes and search functionalities. On August 5, an issue arose during a database migration that impacted pull request queries due to the ORM referencing a dropped column, affecting about 4% of web and REST API traffic, which was mostly resolved by updating the ORM instructions. A secondary issue affected a smaller percentage of pull request traffic and was fully resolved later that day. On August 12, connectivity issues between load balancers and search hosts led to degraded search performance, causing up to 75% of search queries to fail, which was mitigated by throttling the search indexing pipeline and resolving load balancer configurations. The third incident on August 27 also stemmed from a database migration related to Copilot functionality, causing significant request failures until a schema fix was applied. GitHub has since implemented temporary blocks on column drop operations, improved monitoring and load balancing, and is working on preventing similar issues in the future.