AI Uncovers High-Risk GitHub Flaw CVE-2026-3854 as 88% of Enterprise Instances Remain Exposed

GitHub Enterprise Server is a self-hosted code-hosting platform that often stores sensitive corporate assets, including source code, credentials and development workflows. Cybersecurity company Wiz used AI technology to uncover the high-risk vulnerability CVE-2026-3854. Exploitation could compromise corporate software supply chains, putting the pace of patching under scrutiny.

GitHub released a patch for CVE-2026-3854 in 2026. Attackers can trigger remote code execution through a specially crafted Git push option, making the vulnerability relatively easy to exploit. Wiz said, however, that 88% of GitHub Enterprise Server instances have yet to be updated and remain exposed to attacks.