{"answers":{"affected":"9 open source packages ship an affected version, including github.com/moby/moby, github.com/docker/docker and github.com/moby/moby/v2. It affects 3 products.","exploited":"There is no known exploitation of CVE-2026-42306 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-42306 is a high-severity vulnerability in moby, published on 12 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-42306 and fix it if it is affected.\n\nWhat it is: CVE-2026-42306 is a high-severity vulnerability in moby, published on 12 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-42306 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/moby/moby (Go): affected all versions; no fix listed\n- github.com/moby/moby (Go): affected all versions up to 28.5.2; no fix listed\n- github.com/moby/moby (Go): affected all versions up to 28.5.2; no fix listed\n- github.com/docker/docker (Go): affected all versions; no fix listed\n- github.com/docker/docker (Go): affected all versions up to 28.5.2; no fix listed\n- github.com/docker/docker (Go): affected all versions up to 28.5.2; no fix listed\n- github.com/moby/moby/v2 (Go): affected all versions; fixed in 2.0.0-beta.14\n- github.com/moby/moby/v2 (Go): affected all versions; fixed in 2.0.0-beta.14\n- github.com/moby/moby/v2 (Go): affected all versions; fixed in 2.0.0-beta.14\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-42306/ (Markdown: https://insights.sbomify.com/CVE-2026-42306/index.md)","id":"CVE-2026-42306","markdown":"https://insights.sbomify.com/CVE-2026-42306/index.md","name":"CVE-2026-42306","record":{"aliases":["BELL-CVE-2026-42306","CLEANSTART-2026-FX37210","DEBIAN-CVE-2026-42306","ECHO-4e5e-0474-bde5","GHSA-rg2x-37c3-w2rh","GO-2026-5617","MINI-24pc-4636-vq22","MINI-253q-6qr7-c6cg","MINI-2v77-4mc5-w7m3","MINI-2vrg-4wvm-573p","MINI-375f-fwqg-jwm8","MINI-3f5m-w2mj-6mj6","MINI-3g54-4vqw-3j6w","MINI-3mr4-mpm8-prjq","MINI-3pcf-7pgm-rpxf","MINI-3v42-3863-c3hh","MINI-3vq4-ppgj-6hc2","MINI-3vwh-vm32-8c38","MINI-43q6-vrx8-v7g3","MINI-4528-qx9g-wcqg","MINI-46v5-mfp4-ch45","MINI-4787-hhqx-fmhq","MINI-4gq5-2chh-wxpr","MINI-4hx2-23wp-49x6","MINI-4jqw-rvq9-x2cr","MINI-4q6m-66x9-224g","MINI-4r5r-6rgc-vvr5","MINI-4xh6-55f5-4rrp","MINI-552m-vj9v-rfj8","MINI-55hh-6m2h-p37m","MINI-55w9-qvfm-fq84","MINI-56gg-6vmq-mxvh","MINI-57q2-8222-96g5","MINI-57rw-mvxq-p7jh","MINI-5f75-p49h-hfjp","MINI-5fjj-9cvv-m82f","MINI-5gfq-4xgh-jjc8","MINI-5gh6-cqjw-j73m","MINI-5h35-fr7v-3p8x","MINI-5h57-r6pv-9g3p","MINI-5v8v-7h8v-h65c","MINI-5wq6-vpq5-9gqh","MINI-5xw5-p9m2-3pqf","MINI-62q5-vc7h-qjr9","MINI-63gr-c73f-6cpr","MINI-656c-pjjw-gv2p","MINI-65vg-p5wr-xx37","MINI-66mf-rmpg-jfhf","MINI-675p-wc3j-v698","MINI-683c-h7f7-fghg","MINI-68cp-q9fr-vfh7","MINI-68hf-w9f5-jjgq","MINI-6f8h-9m4p-j7qr","MINI-6hhj-9xcf-cgcf","MINI-6m33-p384-gw8q","MINI-6m8g-85rw-qm7c","MINI-6pmh-8352-5w7r","MINI-6q35-fq5r-mm36","MINI-6qm9-m8jr-m4mh","MINI-6rvx-3hc9-2925","MINI-6w7w-g65v-3m3q","MINI-6wc2-38m8-c74h","MINI-74jw-4v9v-m2gv","MINI-76v5-9wwx-fh64","MINI-776q-4x86-37x5","MINI-789q-xrr9-px5f","MINI-78pm-456f-8pmj","MINI-7cg3-5w72-vvf5","MINI-7fpc-x5f3-jw4h","MINI-7gp3-qqcx-h7w2","MINI-7p5j-74h3-xqj6","MINI-7rhx-9jg5-4w84","MINI-7rrr-3fpg-c2jr","MINI-823p-jqf6-4fxw","MINI-82w5-3fgp-mg22","MINI-8666-f4vg-mf3f","MINI-87gw-jmf6-cpjq","MINI-88xq-3p8p-6mhx","MINI-89f9-vj89-x97v","MINI-89m6-69qq-wvv5","MINI-8ggq-95h2-65rp","MINI-8hf2-9p55-75wr","MINI-8m5x-rmg2-5qmc","MINI-8m6p-c9rv-wpjc","MINI-8pr7-p667-wp38","MINI-8qq3-xr9p-m5cc","MINI-8qxh-hmvw-xhww","MINI-8wcm-3qqx-h7m2","MINI-8whw-3fm8-x743","MINI-9276-78f4-73qx","MINI-92wj-mjq5-r2hh","MINI-92xc-h5q7-qf99","MINI-932h-f4qj-7638","MINI-98hg-69r9-hw3f","MINI-99j6-hwgw-2xjv","MINI-99mg-g6r9-jwx5","MINI-9c29-3p7m-6rc6","MINI-9f8r-gmg9-368p","MINI-9h8h-v3pm-jv27","MINI-9jv9-g3jg-r8xr","MINI-9pc3-hjvv-jwch","MINI-9rvc-7wqm-gh2p","MINI-9vx4-j9ww-6vvg","MINI-9w43-mhq5-74hm","MINI-9w84-7qx3-x4w2","MINI-9w8v-79rj-2qm5","MINI-c45p-8h9r-q7vf","MINI-c4h2-7pv8-c7vq","MINI-c4h5-783f-2p72","MINI-c7q6-9rfh-8366","MINI-cc95-c348-9h7q","MINI-cp43-crq6-62c2","MINI-cw55-q8mc-35mx","MINI-cxc9-559m-pmxg","MINI-cxhw-hjh4-3mxw","MINI-f27q-crm3-mf7g","MINI-f3jw-cxwr-88r2","MINI-f776-342p-hvqx","MINI-f79f-w77h-v668","MINI-f87v-vgpp-9mpv","MINI-f89x-9xc4-xcr5","MINI-f97x-gr4j-c336","MINI-fc4c-fg5v-xf28","MINI-fcw6-pr3p-22wq","MINI-ff2q-4q34-vwqc","MINI-ff7q-8366-rrpp","MINI-fpr4-q9ww-qqm2","MINI-fvwq-pqh5-5w66","MINI-fw3j-3fhm-7f7v","MINI-fwvf-p5qf-rx26","MINI-g4hm-h6pj-rf36","MINI-g649-3j56-x22m","MINI-g8p4-p92q-q3j8","MINI-g93j-r85h-4jgf","MINI-g9rj-7v3g-vjm4","MINI-grqc-w2j9-xmqm","MINI-gv77-h58q-mx9q","MINI-gw87-hqv5-vm26","MINI-gwv6-q53v-6x86","MINI-h34f-vcrq-58xw","MINI-h42h-p2jv-ffrw","MINI-h4gx-wx25-493x","MINI-h5p3-7fqc-c3h3","MINI-h63p-j76c-rhg5","MINI-h677-4j65-87w9","MINI-h896-96xc-hwpf","MINI-h8mj-mwqh-frg4","MINI-h93f-h87m-q2v2","MINI-hffp-f4hr-mfvf","MINI-hjxq-7prg-8fjx","MINI-hpff-72j9-vmmj","MINI-hpjp-hhgx-v5pf","MINI-hpqj-j56m-rrm4","MINI-hwfm-wmpg-688h","MINI-hx7w-wj5g-85j9","MINI-j24h-xgv3-9v22","MINI-j4gr-3x2g-fqx5","MINI-j5w3-pggp-gqm3","MINI-j6q9-3737-w492","MINI-j75m-3f8v-85f7","MINI-j7j6-hp54-w9x8","MINI-jc35-63pw-6xqr","MINI-jc37-3mf9-c928","MINI-jcxw-5889-c56j","MINI-jfhq-q8w7-8rv2","MINI-jg79-hhc5-w26g","MINI-jggw-64pc-wc6m","MINI-jhjv-m2gv-6p39","MINI-jpw8-xxmf-h362","MINI-jrv3-x2mv-4ghx","MINI-jw6f-g3g2-wxjq","MINI-jwm6-x999-vj2h","MINI-jxgw-65q8-gcq9","MINI-m2gp-fw32-w9g9","MINI-m8gf-7635-w9vp","MINI-mcf3-24gw-ff73","MINI-mmp5-4547-3w26","MINI-mwc9-4r77-8xcw","MINI-mxf9-8qwc-chq5","MINI-p28v-8x9f-3wg9","MINI-p2cf-83mp-m24c","MINI-p2p4-4wfh-gmv7","MINI-p2xq-xrcf-5g5f","MINI-p49v-x2vw-fxph","MINI-p4mc-v438-gwm3","MINI-p7f2-rq2h-4c43","MINI-p8cc-hg3h-c2q6","MINI-p939-h87w-q6qf","MINI-pjjj-78m5-fxwc","MINI-pmmj-v3fq-qjp5","MINI-pr3x-g64q-pv7v","MINI-prxf-5m7p-2928","MINI-pw8g-qprm-9wf2","MINI-pxf4-w8c4-27cf","MINI-q3rv-2hq4-h5hv","MINI-q6j8-fhw2-cx96","MINI-q7mf-c3x7-xhf7","MINI-q82h-g6m4-7r85","MINI-q9xq-pj4v-cc6x","MINI-qcfq-73h7-6784","MINI-qfmj-c7wp-jwgc","MINI-qjr7-5mch-fg4r","MINI-qjwx-fr7p-26m4","MINI-qpfr-7g3x-98j9","MINI-qqr8-7983-644h","MINI-qvf9-v936-rm84","MINI-qxvf-rprg-mr5c","MINI-r255-4rhw-6qp5","MINI-r297-9r3c-mpxp","MINI-r875-4f5m-mrw3","MINI-rc26-68mj-wg8q","MINI-rch2-qx93-95mx","MINI-rg7g-r77v-ww7f","MINI-rh94-7xgj-63mm","MINI-rmg4-929m-33rq","MINI-rmq5-697q-xmc6","MINI-rrxv-3rj4-2786","MINI-rv35-5c5p-34w2","MINI-rv64-pv2w-mq6f","MINI-rw2f-v863-85ff","MINI-v2c4-99cm-g9mg","MINI-v552-8vvr-f338","MINI-v576-prhv-9qr3","MINI-v622-6wc7-545w","MINI-v638-52v2-599h","MINI-v6c8-8vhg-gqqr","MINI-v794-xjq7-r368","MINI-v86c-j6vj-g38x","MINI-v9jg-mwwg-h2fj","MINI-v9mq-rhw7-w4j3","MINI-vc2c-w43j-62qh","MINI-vhc6-8c7w-wmx3","MINI-vjgh-ccmv-x5p3","MINI-vx22-8wjx-pm6c","MINI-vxp5-876w-2gjv","MINI-w3q2-g73w-gqgw","MINI-w66r-p4pp-9vc6","MINI-w6xx-rpg2-gw6w","MINI-w83w-995m-6mxm","MINI-w86h-6fvj-qw4w","MINI-w8vj-3qhv-26x4","MINI-wf2q-f9jx-r869","MINI-wffp-6r24-pw38","MINI-wj3x-98m9-974p","MINI-wjpv-pr6v-6449","MINI-wm29-gw24-94q4","MINI-wq3g-55vx-jpxg","MINI-wrr7-745h-cjfh","MINI-ww6x-g4vx-c7wc","MINI-wwvj-f42x-w96m","MINI-x64f-qg4m-hhhr","MINI-x8g7-2gxc-5w9w","MINI-x9r6-g397-73qq","MINI-xc46-cxjm-q8j3","MINI-xcq8-jwgr-39gx","MINI-xf29-x2m7-6943","MINI-xf7g-5xv9-f5g7","MINI-xf8r-jw5q-74r9","MINI-xfmc-2pvr-342r","MINI-xj6p-2f2q-cx6q","MINI-xjgm-9929-98v5","MINI-xjpv-6m3m-x62x","MINI-xm2v-mjr7-984m","MINI-xq52-2qr4-xph5","MINI-xqxr-8wx6-w7g7","MINI-xvr3-8rx8-v5mp","MINI-xw25-vjgg-pxcv","MINI-xx5f-hghm-r39w","ROOT-APP-GOBINARY-CVE-2026-42306","UBUNTU-CVE-2026-42306"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["data_modify","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Docker container engine","requires_auth":"low_privilege","summary":"A race condition in Docker cp allows malicious containers to redirect bind mounts, potentially overwriting host files or causing denial of service.","user_interaction":"required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"engine","vendor":"docker"},{"product":"moby","vendor":"mobyproject"},{"product":"moby\\/v2","vendor":"mobyproject"}],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-61","name":"UNIX Symbolic Link (Symlink) Following"},{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Moby: Race condition in docker cp allows bind mount redirection to host path","id":"CVE-2026-42306","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":9,"n_references":1,"next":{"headline":"Vim: OS Command Injection in netrw","id":"CVE-2026-42307"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/docker/docker","purl":"pkg:golang/github.com/docker/docker","source":"GO-2026-5617"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["28.5.2"],"package":"github.com/docker/docker","purl":null,"source":"GHSA-rg2x-37c3-w2rh"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["28.5.2"],"package":"github.com/docker/docker","purl":"pkg:golang/github.com/docker/docker","source":"GHSA-rg2x-37c3-w2rh"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/moby/moby","purl":"pkg:golang/github.com/moby/moby","source":"GO-2026-5617"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["28.5.2"],"package":"github.com/moby/moby","purl":null,"source":"GHSA-rg2x-37c3-w2rh"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["28.5.2"],"package":"github.com/moby/moby","purl":"pkg:golang/github.com/moby/moby","source":"GHSA-rg2x-37c3-w2rh"},{"ecosystem":"Go","fixed":["2.0.0-beta.14"],"introduced":["0"],"last_affected":[],"package":"github.com/moby/moby/v2","purl":null,"source":"GHSA-rg2x-37c3-w2rh"},{"ecosystem":"Go","fixed":["2.0.0-beta.14"],"introduced":["0"],"last_affected":[],"package":"github.com/moby/moby/v2","purl":"pkg:golang/github.com/moby/moby/v2","source":"GHSA-rg2x-37c3-w2rh"},{"ecosystem":"Go","fixed":["2.0.0-beta.14"],"introduced":["0"],"last_affected":[],"package":"github.com/moby/moby/v2","purl":"pkg:golang/github.com/moby/moby/v2","source":"GO-2026-5617"}],"prev":{"headline":"Dulwich has an arbitrary file write via NTFS-hostile tree entries on Windows","id":"CVE-2026-42305"},"products":["moby"],"published":"2026-06-12","related":[{"cvss_score":8.8,"headline":"Moby: AuthZ plugin bypass with oversized request body","id":"CVE-2026-34040","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":6.8,"headline":"Moby: Off-by-one error in plugin privilege validation","id":"CVE-2026-33997","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":6.1,"headline":"Moby: Race condition in docker cp allows creation of arbitrary empty files on the host via symlink swap","id":"CVE-2026-41568","kev_date_added":null,"published":"2026-06-12"},{"cvss_score":4.9,"headline":"Denial of service in n/a","id":"CVE-2018-20699","kev_date_added":null,"published":"2019-01-12"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-13","vendors":["moby"]},"summary":"A race condition in Docker cp allows malicious containers to redirect bind mounts, potentially overwriting host files or causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-42306/"}