CVE-2023-1265 Auth bypass in GitLab

What is CVE-2023-1265?

CVE-2023-1265 is a medium-severity authentication bypass vulnerability in Gitlab Gitlab, published on 3 May 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

An issue has been discovered in GitLab affecting all versions starting from 11.9 before 15.9.6, all versions starting from 15.10 before 15.10.5, all versions starting from 15.11 before 15.11.1. The condition allows for a privileged attacker, under certain conditions, to obtain session tokens from all users of a GitLab instance.

Weakness: CWE-384

Which versions are affected by CVE-2023-1265?

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

Products include Gitlab Gitlab.

How do I fix CVE-2023-1265?

Upgrade gitlab to a fixed version for your release line: 15.9.6, 15.10.5 or 15.11.1.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-1265 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1265 exists.

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-2023-1265, GHSA-34vw-vvrj-pr33, UBUNTU-CVE-2023-1265.