CVE-2026-100833

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Source
https://cve.org/CVERecord?id=CVE-2026-100833
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100833.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-100833
Aliases
  • GHSA-m2qg-wrxv-h898
Published
2026-09-27T01:28:32Z
Modified
2026-10-28T02:31:04Z
Severity
  • 8.6 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Contrast before 1.23.1 Image Substitution via Policy Generation
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100833.json"
}
References

Affected packages

Git / github.com/edgelesssys/contrast

Affected ranges

Type
GIT
Repo
https://github.com/edgelesssys/contrast
Events
Introduced
b5b8c31d6673559df2881902882f89e7ec87ca62
Fixed
1c6f2bbec66007f1fed56b64a5b06a4e617409e2
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "1.14.0"
                },
                {
                    "fixed": "1.23.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "1.14.0"
                },
                {
                    "fixed": "1.23.1"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100833.json"