{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18171","assignerOrgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","state":"PUBLISHED","assignerShortName":"Docker","dateReserved":"2026-07-28T21:28:23.642Z","datePublished":"2026-08-12T14:47:24.572Z","dateUpdated":"2026-08-12T17:02:13.455Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["MacOS","Linux","Windows"],"product":"Docker Sandboxes","vendor":"Docker","cpes":["cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*"],"versions":[{"version":"0.35.0","status":"affected","lessThanOrEqual":"0.38.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Robbe Van Roey of Aikido Security"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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."}],"value":"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."}],"impacts":[{"capecId":"CAPEC-554","descriptions":[{"lang":"en","value":"CAPEC-554 Functionality Bypass"}]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","exploitMaturity":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","shortName":"Docker","dateUpdated":"2026-08-12T14:47:24.572Z"},"references":[{"tags":["product"],"url":"https://docs.docker.com/ai/sandboxes/"},{"tags":["product"],"url":"https://docs.docker.com/ai/sandboxes/architecture/"}],"source":{"discovery":"EXTERNAL"},"title":"Docker Sandboxes read-only runtime mount writable through its shared-export alias"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T17:01:58.499401Z","id":"CVE-2026-18171","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-12T17:02:13.455Z"}}]}}