{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "1.5.0"
              },
              {
                "last_affected": "1.5.8"
              },
              {
                "introduced": "1.6.0"
              },
              {
                "last_affected": "1.6.7"
              }
            ]
          },
          "events": [
            {
              "introduced": "c3c353285578eb68b334fc8766746b754b6b3789"
            },
            {
              "last_affected": "80f49905d9108c11f327d7eb683ec184b96bc84e"
            },
            {
              "introduced": "df8ea82bf434fece015767579ef2e4a16e6a3fb3"
            },
            {
              "last_affected": "2511ab8c8c59a203e77bb804846593c3690fcf4a"
            }
          ],
          "repo": "https://github.com/istio/istio",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.",
  "id": "CVE-2020-16844",
  "modified": "2026-03-13T21:53:42.505390026Z",
  "published": "2020-10-01T17:15:13.150Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/istio/istio/releases"
    },
    {
      "type": "EVIDENCE",
      "url": "https://istio.io/latest/news/security/istio-security-2020-009/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}