title: Improper access control in GitHub Enterprise Server leading to privilege escalation of organization member
description: An improper access control vulnerability was identified in the GitHub Enterprise Server API that allowed an organization member to escalate permissions and gain access to unauthorized repositories within an organization. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.21 and was fixed in 2.20.9, 2.19.15, and 2.18.20. This vulnerability was reported via the GitHub Bug Bounty program.
problem types: CWE-285: Improper Authorization
affected:
{
product: GitHub Enterprise Server
vendor: GitHub
versions:
lessThan: 2.20.9, status: affected, version: 2.20, versionType: custom
lessThan: 2.19.15, status: affected, version: 2.19, versionType: custom
lessThan: 2.18.20, status: affected, version: 2.18, versionType: custom
}