🎯 New Report #3641229: GitHub user to server tokens can create issues in any public repository
🔺Severity: Medium
👽 Reporter: ahacker1
⭐️ Reputation: 7438
🛠 State: resolved
💼 Team: GitHub
💵 Bounty: null
🕐 Submitted: 2026-04-01
⏰ Disclosed: 2026-07-22 19:39:24
📝 Summary: A vulnerability was identified in GitHub Enterprise Server that allowed a user-to-server token scoped to a GitHub App installation to perform certain write operations on public repositories outside the token's intended scope. The authorization check only verified that the installation had read permissions on the target repository rather than verifying that the token's installation was explicitly granted access to that repository. This vulnerability was fixed by adding a repository scope check for user-to-server tokens issued by global apps.
📂 Report JSON File: 3641229
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