{"id":"CVE-2026-58053","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-58053","summary":"Gitea act_runner with the Docker backend (through act 0.262.0) passes a workflow's container.options string to the Docker job container's HostConfig and, when configured with privileged:…","details":"Gitea act_runner with the Docker backend (through act 0.262.0) passes a workflow's container.options string to the Docker job container's HostConfig and, when configured with privileged: false, forces only the Privileged flag off while merging options such as --pid=host, --cap-add, and --security-opt unchanged. A user who can run a workflow on a Docker-backed runner can create a job container with host namespaces and broad capabilities and escape to the host as root despite privileged mode being disabled.","published":"2026-06-28T02:16:32.420","modified":"2026-06-30T15:17:00.077","cvss":{"score":9.9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/bikini/exploitarium/tree/main/gitea-act-runner-container-options-poc"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/gitea-act-runner-container-hardening-bypass-via-workflow-container-options"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-30T15:17:00.077"}}