{"id":"CVE-2026-100833","title":"Contrast (edgelesssys/contrast) versions 1.14.0 before 1.23.1 generate runtime policies that fail to detect all container image substitutions","summary":"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 t…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-20"],"vendor":"edgelesssys","product":"contrast","affected":["contrast >= 1.14.0 < 1.23.1"],"published":"2026-09-27","updated":"2026-09-27","sourceUpdated":"2026-09-27T02:17:21.323","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100833","references":[{"url":"https://github.com/edgelesssys/contrast/security/advisories/GHSA-m2qg-wrxv-h898","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/contrast-before-1.23.1-image-substitution-via-policy-generation","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-27T02:41:45.568Z","slug":"CVE-2026-100833","body":"## Overview\n\nContrast (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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}