VulnerabilityBleeping Computer
9.0 — CRITICAL
GitHub fixes RCE flaw that gave access to millions of private repos
In early March, GitHub patched a critical remote code execution vulnerability (CVE-2026-3854) that could have allowed attackers to access millions of private repositories. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A remote code execution vulnerability (CVE-2026-3854) in GitHub's git push operations allowed attackers to access millions of private repositories, with exploitation requiring a single maliciously crafted 'git push' command.
⚙️Technical Details
💥Impact Assessment
Severity: Critical
Who Is at Risk
Users with access to private repositories on GitHub.com or vulnerable GitHub Enterprise servers
🛡️Recommended Actions
1Apply the patch released by GitHub as soon as possible
2Review and update git push operations to prevent similar vulnerabilities
3Monitor for suspicious activity on affected systems
📦Affected Products
Github.Com:Github Enterprise Cloud:Github Enterprise Cloud With Data Residency:Github Enterprise Cloud With Enterprise Managed Users:Github Enterprise Server:
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