{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-42306: Moby: Race condition in docker cp allows bind mount redirection to host path","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-42306","status":"final","version":"1","initial_release_date":"2026-06-12T18:09:22.188Z","current_release_date":"2026-06-13T03:25:47.055Z","revision_history":[{"date":"2026-06-12T18:09:22.188Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-42306 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-42306"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-42306"},{"category":"external","summary":"https://github.com/moby/moby/security/advisories/GHSA-rg2x-37c3-w2rh","url":"https://github.com/moby/moby/security/advisories/GHSA-rg2x-37c3-w2rh"}]},"product_tree":{"branches":[{"category":"vendor","name":"moby","branches":[{"category":"product_name","name":"moby","branches":[{"category":"product_version","name":"github.com/docker/docker/daemon <= 28.5.2","product":{"name":"moby moby github.com/docker/docker/daemon <= 28.5.2","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:moby:moby:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"Docker Engine < 29.5.1","product":{"name":"moby moby Docker Engine < 29.5.1","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:moby:moby:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"github.com/moby/moby/v2/daemon < 2.0.0-beta.14","product":{"name":"moby moby github.com/moby/moby/v2/daemon < 2.0.0-beta.14","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:moby:moby:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-42306","title":"Moby: Race condition in docker cp allows bind mount redirection to host path","notes":[{"category":"description","text":"Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H","baseScore":7.2,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}]}]}