{"affected":[{"defaultStatus":"unaffected","platforms":["MacOS","Linux","Windows"],"product":"Docker Sandboxes","source":"CNA: Docker","vendor":"Docker","versions":[{"lessThan":"0.51.0","status":"affected","version":"0.28.0","versionType":"semver"}]}],"cveId":"CVE-2026-103916","cwes":["CWE-59"],"description":"Docker Sandboxes sbx cp does not safely confine host-side paths to a shared workspace. A malicious sandbox can create or replace a workspace symlink so that a later user-initiated copy reads a host file outside the workspace into the sandbox or writes sandbox-controlled data to a host path outside the workspace with the invoking user's permissions.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.4,"severity":"high","source":"CNA: Docker","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}],"modifiedAt":1793727803309,"publishedAt":1793722743726,"references":[{"source":"CNA: Docker","tags":["product"],"url":"https://docs.docker.com/ai/sandboxes/"},{"source":"CNA: Docker","tags":["technical-description"],"url":"https://docs.docker.com/ai/sandboxes/security/isolation/"},{"source":"CNA: Docker","tags":["release-notes"],"url":"https://github.com/docker/sbx-releases/releases/tag/v0.51.0"}],"remediation":[{"kind":"fix","source":"CNA: Docker","text":"Upgrade Docker Sandboxes to version 0.51.0 or later."},{"kind":"workaround","source":"CNA: Docker","text":"Until upgrading, do not use sbx cp with a host-side source or destination inside a workspace writable by untrusted sandbox code. Use a host-only path for the copy instead."}],"revision":"2122345ec0010ff018f59e49c9325671e751a0915faead60733307116034b9d9","sources":[{"modifiedAt":1793727803309,"name":"CNA: Docker","retrievedAt":1793729314842,"url":"https://www.cve.org/CVERecord?id=CVE-2026-103916"}],"ssvc":{"assessedAt":1793727789265,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Docker Sandboxes sbx cp follows workspace symlinks outside the authorized host directory","updatedAt":1793729314842}