Client-Side code injection through Mermaid markup in GitLab CE/EE 12.9 and later through 13.0.1 allows a specially crafted Mermaid payload to PUT requests on behalf of other users via clicking on a link
A security issue allowed achieving Denial of Service attacks through memory exhaustion by uploading malicious artifacts in all previous GitLab versions through 13.0.1
A Stored Cross-Site Scripting vulnerability allowed the execution on Javascript payloads on the Metrics Dashboard in GitLab CE/EE 12.8 and later through 13.0.1
A specially crafted request could be used to confirm the existence of files hosted on object storage services, without disclosing their contents. This vulnerability affects GitLab CE/EE 12.10 and later through 13.0.1