CVE-2026-73802
Gitea Runner host isolation bypass through container options
- State
- Published
- Severity
- 8.8 High
- Published
- Oct 14, 2026
- Updated
- Oct 18, 2026
- Reserved
- Aug 13, 2026
Description
Gitea Runner passes workflow-controlled container options into Docker job container configuration while privileged mode is disabled. Host namespace settings, expanded capabilities, and security profile overrides can remain effective despite Privileged being forced false. A workflow author able to run jobs on an affected Docker-backed runner can use these options to access host namespaces and execute commands as root on the runner host, bypassing the intended container isolation.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
Gitea RunnerGitea |
|
References
- GitHub Security Advisory GHSA-x4q3-gcj3-m6cfvendor-advisory
- Gitea Runner 3.0.0 release announcementrelease-notes
- gitea/runner v3.0.0 releaserelease-notes
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.