Security advisory

{
  "id": "93528733e876981b2ef961d76539e605c1b50f02705f9b773e349e0586698d84",
  "url": "https://osv.dev/vulnerability/CVE-2020-17446",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-17446",
    "summary": "asyncpg before 0.21.0 allows a malicious PostgreSQL server to trigger a crash or execute arbitrary code (on a database client) via a crafted server response, because of access to an uninitialized pointer in the array data decoder.",
    "evidence": "osv:CVE-2020-17446",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-17446",
      "aliases": [
        "CVE-2020-17446",
        "GHSA-2xpj-f5g2-8p7m",
        "PYSEC-2020-24"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/magicstack/asyncpg",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "87a4302f26e6194f8a8355fc582c98bfc0f1511a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:magic:asyncpg:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.21.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "87a4302f26e6194f8a8355fc582c98bfc0f1511a"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.21.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.20.1",
            "v0.20.0",
            "v0.19.0",
            "v0.18.0",
            "v0.17.0",
            "v0.16.0",
            "v0.15.0",
            "v0.14.0",
            "v0.13.0",
            "v0.12.0",
            "v0.11.0",
            "v0.10.1",
            "v0.10.0",
            "v0.9.0",
            "v0.8.4",
            "v0.8.3",
            "v0.8.2",
            "v0.8.1",
            "v0.7.0",
            "v0.6.3",
            "v0.6.2",
            "v0.6.1",
            "v0.6.0",
            "v0.5.4",
            "v0.5.3",
            "v0.5.2",
            "v0.5.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17446.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:02.057636410Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2020/09/msg00002.html",
        "https://github.com/MagicStack/asyncpg/releases/tag/v0.21.0"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-17446",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383216,
  "published_at": "2020-08-12T16:15:11.963+00:00"
}