{"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":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/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":"2026-10-09","sourceUpdated":"2026-10-09T14:17:09.850","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","exploit-available"],"epss":0.00234,"epssPercentile":0.14192,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-28T13:53:22.400645Z"},"ingestedAt":"2026-09-27T02:41:45.568Z","exploits":{"github":1,"githubRepos":["https://github.com/muhammad-usama-sardar/intra-handshake-fail"],"checkedAt":"2026-10-27T16:52:20.449Z"},"exploitAvailable":true,"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":"abyssal","depthScore":65,"depthScoreParts":{"impact":52.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":223880,"id":"CVE-2026-100833","ts":1792266376352,"field":"exploit_available","old":"false","new":"true"},{"seq":218509,"id":"CVE-2026-100833","ts":1791558070883,"field":"cvss","old":"8.2","new":"9.6"},{"seq":218508,"id":"CVE-2026-100833","ts":1791558070883,"field":"severity","old":"high","new":"critical"}]}