{"id":"CVE-2026-93320","summary":"BuildKit improperly handles special files in build snapshots","details":"BuildKit may be tricked into performing file actions with special file inodes where regular files are expected. Special files may block operations or, on rootful workers, allow unintended host device access.","aliases":["GHSA-9728-qjrv-2xh2"],"modified":"2026-10-06T10:30:40.608243699Z","published":"2026-10-05T17:50:44.195Z","database_specific":{"cna_assigner":"Docker","cwe_ids":["CWE-441"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93320.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93320.json"},{"type":"FIX","url":"https://github.com/moby/buildkit/releases/tag/v0.33.1"},{"type":"ADVISORY","url":"https://github.com/moby/buildkit/security/advisories/GHSA-9728-qjrv-2xh2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93320"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/moby/buildkit","events":[{"introduced":"0"},{"last_affected":"dddd5621af04ea57823085c93a063383f71d3173"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.33.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.33.0-rc2","v0.33.0","dockerfile/1.27.0-labs","dockerfile/1.27.0","dockerfile/1.27.0-rc1-labs","dockerfile/1.27.0-rc1","v0.33.0-rc1","v0.32.0","dockerfile/1.26.0-labs","dockerfile/1.26.0","v0.32.0-rc2","dockerfile/1.26.0-rc2-labs","dockerfile/1.26.0-rc2","v0.32.0-rc1","v0.31.0","dockerfile/1.25.0-labs","dockerfile/1.25.0","v0.31.0-rc2","dockerfile/1.25.0-rc2-labs","dockerfile/1.25.0-rc2","v0.31.0-rc1","dockerfile/1.25.0-rc1-labs","dockerfile/1.25.0-rc1","v0.30.0-rc2","v0.30.0-rc1","dockerfile/1.24.0-rc1-labs","dockerfile/1.24.0-rc1","v0.29.0","dockerfile/1.23.0-labs","dockerfile/1.23.0","v0.29.0-rc1","dockerfile/1.23.0-rc1-labs","dockerfile/1.23.0-rc1","v0.28.0-rc2","dockerfile/1.22.0-rc2-labs","dockerfile/1.22.0-rc2","v0.28.0-rc1","dockerfile/1.22.0-rc1-labs","dockerfile/1.22.0-rc1","v0.27.0-rc2","v0.27.0-rc1","dockerfile/1.21.0-rc1-labs","dockerfile/1.21.0-rc1","v0.26.0-rc2","v0.26.0","dockerfile/1.20.0-labs","dockerfile/1.20.0","v0.26.0-rc1","dockerfile/1.20.0-rc1-labs","dockerfile/1.20.0-rc1","v0.25.0-rc1","dockerfile/1.19.0-rc1-labs","dockerfile/1.19.0-rc1","v0.24.0-rc2","dockerfile/1.18.0-rc2-labs","dockerfile/1.18.0-rc2","v0.24.0-rc1","dockerfile/1.18.0-rc1-labs","dockerfile/1.18.0-rc1","v0.22.0-rc1","dockerfile/1.16.0-rc1-labs","dockerfile/1.16.0-rc1","v0.23.0-rc1","dockerfile/1.17.0-rc1-labs","dockerfile/1.17.0-rc1","v0.21.0-rc1","dockerfile/1.15.0-rc1-labs","dockerfile/1.15.0-rc1","v0.20.0-rc2","dockerfile/1.14.0-rc2-labs","dockerfile/1.14.0-rc2","v0.20.0-rc1","dockerfile/1.14.0-rc1-labs","dockerfile/1.14.0-rc1","v0.19.0-rc3","v0.19.0-rc2","dockerfile/1.13.0-rc1-labs","dockerfile/1.13.0-rc1","v0.19.0-rc1","v0.18.0-rc2","v0.18.0","dockerfile/1.12.0-labs","dockerfile/1.12.0","v0.18.0-rc1","dockerfile/1.12.0-rc1-labs","dockerfile/1.12.0-rc1","v0.17.0","dockerfile/1.11.0-labs","dockerfile/1.11.0","v0.17.0-rc1","dockerfile/1.11.0-rc1-labs","dockerfile/1.11.0-rc1","v0.17.0-rc2","dockerfile/1.11.0-rc2-labs","dockerfile/1.11.0-rc2","v0.16.0-rc2","v0.16.0-rc1","dockerfile/1.10.0-rc1-labs","dockerfile/1.10.0-rc1","v0.15.0-rc2","v0.15.0","dockerfile/1.9.0-rc2-labs","dockerfile/1.9.0-rc2","dockerfile/1.9.0-labs","dockerfile/1.9.0","v0.15.0-rc1","dockerfile/1.9.0-rc1-labs","dockerfile/1.9.0-rc1","v0.13.0-beta2","v0.14.0","dockerfile/1.8.0-labs","dockerfile/1.8.0","v0.14.0-rc2","dockerfile/1.8.0-rc2-labs","dockerfile/1.8.0-rc2","v0.14.0-rc1","dockerfile/1.8.0-rc1-labs","dockerfile/1.8.0-rc1","v0.13.0-rc3","v0.13.0-rc2","dockerfile/1.7.0-rc1-labs","dockerfile/1.7.0-rc1","v0.13.0-rc1","v0.13.0-beta3","v0.13.0-beta1","v0.12.0","dockerfile/1.6.0-labs","dockerfile/1.6.0","v0.12.0-rc2","dockerfile/1.6.0-rc2-labs","dockerfile/1.6.0-rc2","v0.12.0-rc1","dockerfile/1.6.0-rc1-labs","dockerfile/1.6.0-rc1","v0.11.0-rc3","v0.11.0-rc2","dockerfile/1.5.0-rc2-labs","dockerfile/1.5.0-rc2","v0.11.0-rc1","dockerfile/1.5.0-rc1-labs","dockerfile/1.5.0-rc1","v0.10.0","dockerfile/1.4.0-labs","dockerfile/1.4.0","v0.10.0-rc2","dockerfile/1.4.0-rc2","dockerfile/1.4.0-labs-rc2","v0.10.0-rc1","dockerfile/1.4.0-rc1","dockerfile/1.4.0-labs-rc1","v0.9.0-rc2","v0.9.0","dockerfile/1.3.0-labs","dockerfile/1.3.0","v0.9.0-rc1","dockerfile/1.3.0-rc1-labs","dockerfile/1.3.0-rc1","v0.8.1","dockerfile/1.2.1-labs","dockerfile/1.2.1","dockerfile/1.2.0-labs","dockerfile/1.2.0","v0.8.0","v0.8.0-rc3","v0.8.0-rc2","v0.8.0-rc1","dockerfile/1.2.0-rc1-labs","dockerfile/1.2.0-rc1","v0.7.0","dockerfile/1.1.6-experimental","dockerfile/1.1.6","v0.7.0-rc1","dockerfile/1.1.6-rc1-experimental","dockerfile/1.1.6-rc1","v0.6.1","dockerfile/1.1.3-experimental","dockerfile/1.1.3","v0.6.0","dockerfile/1.1.2-experimental","dockerfile/1.1.2","dockerfile/1.1.1-experimental","dockerfile/1.1.1","v0.5.1","v0.5.0","dockerfile/1.1.0-experimental","dockerfile/1.1.0","v0.4.0","dockerfile/1.0.2-experimental","v0.3.3","dockerfile/1.0.1-experimental","dockerfile/1.0.1","dockerfile/1.0.0-experimental","dockerfile/1.0.0","v0.3.2","dockerfile/0.9.0-experimental","dockerfile/0.9.0","v0.3.1","v0.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93320.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:H/SA:H"}]}