Security advisory

{
  "id": "fa0ae8717b07718f26c0ddc4d9ead22e712afde61825a0339a87a54a40af5d84",
  "url": "https://osv.dev/vulnerability/CVE-2021-34824",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-34824",
    "summary": "Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.",
    "evidence": "osv:CVE-2021-34824",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-34824",
      "aliases": [
        "CVE-2021-34824"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/istio/istio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c87a4c874df27e37a3e6c25fa3d1ef6279685d23"
                },
                {
                  "fixed": "889aeb61320f41b3380be6027c3347135d1fa95d"
                },
                {
                  "introduced": "d26cba7e341587453ffeb978f5cf6fbc32f346f8"
                },
                {
                  "fixed": "25c4362d87b9946d6b59d39bf21c6c8a192d060f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.8.0"
                      },
                      {
                        "fixed": "1.9.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.10.0"
                      },
                      {
                        "fixed": "1.10.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.10.1",
            "1.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34824.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:45.562464112Z",
      "provider": "osv",
      "references": [
        "https://github.com/istio/istio/releases",
        "https://istio.io/latest/news/security/istio-security-2021-007"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-34824",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386101,
  "published_at": "2021-06-29T14:15:08.5+00:00"
}