{"id":"EUVD-2026-87850","revision":"65dda950802048369890958594956e2e","records":[{"revision":"65dda950802048369890958594956e2e","observedAt":"2026-10-28T00:00:40.117+00:00","statement":{"source":"euvd","id":"EUVD-2026-87850","aliases":["CVE-2026-100838","GHSA-h734-rggh-79xq"],"title":"Contrast is a confidential-computing runtime for Kubernetes. In versions before 1.19.1, the Kata agent policies generated by the Contrast CLI contained a flaw in the CopyFile verification that allowed arbitrary writes to the guest root file…","description":"Contrast is a confidential-computing runtime for Kubernetes. In versions before 1.19.1, the Kata agent policies generated by the Contrast CLI contained a flaw in the CopyFile verification that allowed arbitrary writes to the guest root filesystem. A malicious process on the untrusted host able to connect to the Kata agent VSOCK could issue a series of CopyFile requests to overwrite security-critical files in the guest or trick the workload into disclosing sensitive data, effectively amounting to a full guest takeover. Users unable to upgrade can apply an equivalent rego policy fix passed to 'contrast generate --policy'.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.6,"severity":null}],"references":["https://github.com/edgelesssys/contrast/security/advisories/GHSA-rh99-wc69-c255","https://www.vulncheck.com/advisories/contrast-before-1.19.1-copyfile-policy-symlink-subversion"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-87850","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 27, 2026, 1:28:35 AM","dateUpdated":"Oct 8, 2026, 3:22:00 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-87850","identifiers":["EUVD-2026-87850","CVE-2026-100838","GHSA-h734-rggh-79xq"]},"retained":false,"historicalAffected":[]}],"coverage":[]}