GitHub Down – Authentication Issues Denying Access to Actions 

GitHub experienced a global service disruption on May 26, 2026 when authentication failures prevented developers from using GitHub Actions and GitHub Pages, causing CI/CD pipelines to fail and delaying deployments; GitHub later reported the incident resolved and promised a root cause analysis. No root cause or evidence of malicious activity was disclosed, and mitigations suggested include monitoring the status page and using alternate CI/CD tools as needed.