CVE-2026-5173
Publication date 9 April 2026
Last updated 9 April 2026
Ubuntu priority
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| gitlab | 25.10 questing | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 16.04 LTS xenial | Ignored |
Notes
mdeslaur
GitLab isn't maintainable as a distro package, and was removed from Ubuntu because of this. We will not be fixing security issues in the gitlab package in Xenial.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |