CVE-2026-58053 — Gitea act_runner - Container Hardening Bypass via Workflow Container Options
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 pr…
Published: 2026-06-28 · CVSS: 9.4 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7