Medium · published October 13, 2026
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.11 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user controlling a Kubernetes agent to cause sensitive authentication tokens to be sent to an unintended server due to improper redirect validation in the Kubernetes proxy.
| Product | Versions | Fixed in |
|---|---|---|
| gitlab/gitlab | ≥ 13.11.0, < 19.2.8 | 19.2.8 |
| gitlab/gitlab | ≥ 13.11.0, < 19.2.8 | 19.2.8 |
| gitlab/gitlab | ≥ 19.3.0, < 19.3.5 | 19.3.5 |
| gitlab/gitlab | ≥ 19.3.0, < 19.3.5 | 19.3.5 |
| gitlab/gitlab | ≥ 19.4.0, < 19.4.2 | 19.4.2 |
| gitlab/gitlab | ≥ 19.4.0, < 19.4.2 | 19.4.2 |