{"id":"CVE-2026-14891","state":"PUBLISHED","title":"Nomad vulnerable to sandbox escape in Docker task driver","description":"HashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver that may allow a job submitter to bind-mount a host path into a container even when volume bind mounts are disabled, potentially leading to reading and writing files on the host. This vulnerability, CVE-2026-14891, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.","publishedAt":"2026-07-08T20:09:05.752Z","updatedAt":"2026-07-09T03:55:54.984Z","severity":{"score":8.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","source":"HashiCorp"},"assigner":"HashiCorp","products":["HashiCorp Nomad","HashiCorp Nomad Enterprise"],"affected":[{"vendor":"HashiCorp","product":"Nomad","defaultStatus":"unaffected","versions":[{"version":"0.4.1","status":"affected","lessThan":"2.0.4","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/nomad"},{"vendor":"HashiCorp","product":"Nomad Enterprise","defaultStatus":"unaffected","versions":[{"version":"0.4.1","status":"affected","lessThan":"2.0.4","changes":[{"at":"1.11.8","status":"unaffected"},{"at":"1.10.14","status":"unaffected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/nomad"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-21-nomad-vulnerable-to-sandbox-escape-in-docker-task-driver/77561"],"weaknesses":["CWE-59"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/14xxx/CVE-2026-14891.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-14891","state":"PUBLISHED","datePublished":"2026-07-08T20:09:05.752Z","dateUpdated":"2026-07-09T03:55:54.984Z","assignerShortName":"HashiCorp","assignerOrgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateReserved":"2026-07-06T18:05:48.932Z"},"containers":{"cna":{"title":"Nomad vulnerable to sandbox escape in Docker task driver","descriptions":[{"lang":"en","value":"HashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver that may allow a job submitter to bind-mount a host path into a container even when volume bind mounts are disabled, potentially leading to reading and writing files on the host. This vulnerability, CVE-2026-14891, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14."}],"affected":[{"vendor":"HashiCorp","product":"Nomad","defaultStatus":"unaffected","versions":[{"version":"0.4.1","status":"affected","lessThan":"2.0.4","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/nomad"},{"vendor":"HashiCorp","product":"Nomad Enterprise","defaultStatus":"unaffected","versions":[{"version":"0.4.1","status":"affected","lessThan":"2.0.4","changes":[{"at":"1.11.8","status":"unaffected"},{"at":"1.10.14","status":"unaffected"}],"versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/nomad"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-21-nomad-vulnerable-to-sandbox-escape-in-docker-task-driver/77561"}],"metrics":[{"cvssV3_1":{"baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access (Link Following)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"HashiCorp","orgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateUpdated":"2026-07-08T20:09:05.752Z"},"credits":[{"lang":"en","value":"This issue was reported to HashiCorp by Volkan Kutal, GitHub handle @KutalVolkan."}],"impacts":[{"capecId":"CAPEC-132","descriptions":[{"lang":"en","value":"CAPEC-132: Symlink Attack"}]}],"source":{"advisory":"HCSEC-2026-21","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-14891"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-09T03:55:54.984Z"}}]}}}