{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.20.0"
              },
              {
                "fixed": "1.20.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8f32af3e8d3ed928ea3e85079fd7ec621f9e1dca"
            }
          ],
          "repo": "https://github.com/edgelesssys/contrast",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3ccm-4qq2-5wrp"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-129"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100836.json"
  },
  "details": "Contrast through 1.20.0 contains a panic vulnerability in the transit-engine endpoint's ciphertextContainer.UnmarshalJSON function that fails to validate decoded ciphertext length before slicing. An authenticated workload with a valid mesh certificate can trigger a runtime panic by submitting a short base64-encoded ciphertext, causing log spam and request failures without crashing the process.",
  "id": "CVE-2026-100836",
  "modified": "2026-09-30T03:30:59.239122710Z",
  "published": "2026-09-27T01:29:58.070Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100836.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/edgelesssys/contrast/security/advisories/GHSA-3ccm-4qq2-5wrp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100836"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/edgeless-systems-contrast-through-1.20.0-denial-of-service-via-ciphertextcontainer"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer"
}