CVE-2026-18171

UNKNOWN 0.0

Docker Sandboxes read-only runtime mount writable through its shared-export alias

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	docker
Product	docker sandboxes
Ecosystems	Container
Industries	Technology
Published	Aug 12, 2026

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Affected Versions

Docker / Docker Sandboxes

0.35.0 ≤ 0.38.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

docs.docker.com: https://docs.docker.com/ai/sandboxes/ docs.docker.com: https://docs.docker.com/ai/sandboxes/architecture/

Credits

Robbe Van Roey of Aikido Security