Securing the git push pipeline: Responding to a critical remote code execution vulnerability

On March 4, 2026, GitHub received a critical vulnerability report from Wiz researchers through their Bug Bounty program, identifying a remote code execution flaw in several GitHub services, including GitHub Enterprise Cloud and Server. The vulnerability allowed users with push access to execute arbitrary commands on GitHub servers using unsanitized git push options. GitHub's security team swiftly validated the issue, developed a fix within two hours, and confirmed that only the researchers' testing exploited the vulnerability, with no customer data compromised. The fix involved sanitizing user-supplied values and removing unnecessary code paths, reinforcing defense in depth. GitHub urged Enterprise Server users to upgrade to patched versions to mitigate risks, while acknowledging Wiz's role in responsibly disclosing the vulnerability, which is set to receive a significant reward in GitHub's Bug Bounty history.

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