{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-79994","assignerOrgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","state":"PUBLISHED","assignerShortName":"Docker","dateReserved":"2026-08-25T16:47:15.411Z","datePublished":"2026-09-15T20:33:21.074Z","dateUpdated":"2026-09-16T17:57:02.176Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Docker Sandboxes","vendor":"Docker","cpes":["cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*"],"versions":[{"version":"0.37.0","status":"affected","lessThan":"0.42.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Jurre van Bergen of ThreatNotify"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to connect to an arbitrary AF_UNIX socket outside the shared workspace. This can expose data or host-side capabilities provided by the targeted socket."}],"value":"The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to connect to an arbitrary AF_UNIX socket outside the shared workspace. This can expose data or host-side capabilities provided by the targeted socket."}],"impacts":[{"capecId":"CAPEC-132","descriptions":[{"lang":"en","value":"CAPEC-132 Symlink Attack"}]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","baseScore":8.7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","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-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","shortName":"Docker","dateUpdated":"2026-09-15T21:38:20.957Z"},"references":[{"tags":["product"],"url":"https://docs.docker.com/ai/sandboxes/"},{"tags":["product"],"url":"https://docs.docker.com/ai/sandboxes/security/isolation/"},{"tags":["patch"],"url":"https://github.com/docker/sailor/pull/2021"},{"tags":["patch"],"url":"https://github.com/docker/sandboxes/pull/5342"},{"tags":["release-notes"],"url":"https://github.com/docker/sbx-releases/releases/tag/v0.42.0"}],"source":{"discovery":"EXTERNAL"},"title":"Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race","workarounds":[{"lang":"en","value":"Use --clone mode and avoid additional read-write host mounts: https://docs.docker.com/ai/sandboxes/usage/#clone-mode"}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-16T17:56:16.161335Z","id":"CVE-2026-79994","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-16T17:57:02.176Z"}}]}}