**MEDIUM**: An attacker could create issues, issue comments, commit comments, and private vulnerability reports in public repositories they did not have write access to. This was possible by using a user-to-server token against endpoints that validated repository read access but did not validate the required write permission for those operations. GitHub has requested CVE ID [CVE-2026-14340](https://www.cve.org/cverecord?id=CVE-2026-14340) for this vulnerability, which was reported via the [GitHub Bug Bounty](https://bounty.github.com/) program.
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