Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
From VID-065B3B72-C5AB-11E8-9AE2-001B217B3468:
Gitlab reports:
SSRF GCP access token disclosure
Persistent XSS on issue details
Diff formatter DoS in Sidekiq jobs
Confidential information disclosure in events API endpoint
validate_localhost function in url_blocker.rb could be bypassed
Slack integration CSRF Oauth2
GRPC::Unknown logging token disclosure
IDOR merge request approvals
Persistent XSS package.json
Persistent XSS merge request project import
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