gitea-runner: workflow container.options passes host namespaces and capability flags to job container when privileged mode is disabled — GHSA-X4Q3-GCJ3-M6CF

Summary

### Summary act_runner appends workflow-controlled `jobs.<job>.container.options` directly to the Docker HostConfig for the job container. When runner privileged mode is disabled, only `Privileged` is forced false. Host namespace flags, capability expansion, and security profile overrides from workflow YAML are preserved in the final HostConfig. A workflow author can enter host PID/IPC namespaces and execute…

Timeline

Published by source

2026-10-02

Risk context

• Reported severity or threat level: critical.
• Reported CVSS score: 9.9 out of 10.
• Review exposure for the affected product or family: go: gitea.com/gitea/runner.

Product

go: gitea.com/gitea/runner

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-X4Q3-GCJ3-M6CF

Source

GitHub

Vendor

GitHub

Published by source

2026-10-02

Last source activity

2026-10-02

Additional identifiers

CVE-2026-73802

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.