CVE-2021-22253 Missing authorization in GitLab

What is CVE-2021-22253?

CVE-2021-22253 is a medium-severity missing authorization vulnerability in Gitlab Gitlab, published on 23 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper authorization in GitLab EE affecting all versions since 13.4 allowed a user who previously had the necessary access to trigger deployments to protected environments under specific conditions after the access has been removed

Weakness: CWE-863

Which versions are affected by CVE-2021-22253?

1 open source package ship an affected version, including gitlab. It affects 1 product.

Products include Gitlab Gitlab.

How do I fix CVE-2021-22253?

Upgrade gitlab to a fixed version for your release line: 13.12.9, 14.0.7 or 14.1.2.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-22253 being exploited?

There is no known exploitation of CVE-2021-22253 in the wild and no public exploit code.

Other vulnerabilities in Gitlab Gitlab

• CVE-2026-97229 GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound Exploited Critical 10.0
• CVE-2026-85706 GitLab Community Edition and Enterprise Edition Path Traversal Exploited Critical 10.0
• CVE-2023-7028 GitLab Community and Enterprise Editions Improper Access Control Exploited Critical 10.0
• CVE-2021-22205 GitLab Community and Enterprise Editions Remote Code Execution Exploited Critical 10.0
• CVE-2021-39935 GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Exploited Medium 6.8

All Gitlab Gitlab vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-gitlab-2021-22253, GHSA-q297-5xx3-gw53, UBUNTU-CVE-2021-22253.