Vulnerability Description
Docker Sandboxes (sbx) applies the read-only intent of a runtime host mount to the in-guest container bind only: the underlying virtio-fs host-edge grant is added to the sandbox's policy-share allowlist with no access mode. The directory stays writable at its shared-export path, so unprivileged code inside the sandbox can derive that path and write to a host directory the operator attached read-only.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-18171?
CVE-2026-18171 is a documented vulnerability. Docker Sandboxes (sbx) applies the read-only intent of a runtime host mount to the in-guest container bind only: the underlying virtio-fs host-edge grant is added to the sandbox's policy-share allowli...
How severe is CVE-2026-18171?
CVSS scoring is not yet available for CVE-2026-18171. Check NVD for updates.
Is there a patch for CVE-2026-18171?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.