CVE-2026-18171
Docker Sandboxes read-only runtime mount writable through its shared-export alias
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.
No summary for this CVE yet.
Weaknesses
Affected Products
Docker
commercial·US
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Attack Graph
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MITRE ATT&CK
2 techniques Initial Access
References
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