{"id":"CVE-2026-100833","revision":"5d63a13a38f448a080d35de49ab61a73","records":[{"revision":"5d63a13a38f448a080d35de49ab61a73","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-100833","aliases":[],"title":"Contrast before 1.23.1 Image Substitution via Policy Generation","description":"Contrast (edgelesssys/contrast) versions 1.14.0 before 1.23.1 generate runtime policies that fail to detect all container image substitutions. A bad rebase during a Kata Containers update accidentally introduced an `allow_storage` rule that accepts storage entries using the `image_guest_pull` driver without verifying the image digest. An attacker with access to the Kata agent API — for example, a Kubernetes cluster administrator in Contrast's threat model — can therefore substitute a container image with an exploit payload, provided the substituted image satisfies the remaining policy rules, undermining the confidential container's integrity guarantees.","state":0,"publishedAt":"2026-09-27T01:28:32.099+00:00","modifiedAt":"2026-10-09T13:22:54.929+00:00","affected":[{"ecosystem":"Vendor product","name":"contrast","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"edgelesssys\",\n                    \"product\": \"contrast\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1.14.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.23.1\"\n                        },\n                        {\n                            \"version\": \"1.23.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.6,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":9.6,"severity":"CRITICAL"}],"references":["https://github.com/edgelesssys/contrast/security/advisories/GHSA-m2qg-wrxv-h898","https://www.vulncheck.com/advisories/contrast-before-1.23.1-image-substitution-via-policy-generation"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-100833","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-100833","identifiers":["CVE-2026-100833"]},"retained":false,"historicalAffected":[]}],"coverage":[]}