Security advisory

{
  "id": "7131384a40949119bae024b46899b50fd6a6c6305974ea563811ab206d4656a9",
  "url": "https://osv.dev/vulnerability/CVE-2021-33038",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33038",
    "summary": "An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.",
    "evidence": "osv:CVE-2021-33038",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-33038",
      "aliases": [
        "CVE-2021-33038",
        "GHSA-h39g-q63v-4h9p",
        "PYSEC-2021-77"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/mailman/hyperkitty",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "5db804b40273026df58679a0ddfaf1e8560ef411"
                },
                {
                  "fixed": "9025324597d60b2dff740e49b70b15589d6804fa"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:hyperkitty_project:hyperkitty:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.3.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9025324597d60b2dff740e49b70b15589d6804fa"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.3.4",
            "1.3.4rc2",
            "1.3.4rc1",
            "1.3.3",
            "1.3.3rc2",
            "1.3.3rc1",
            "1.3.2",
            "v1.3.0",
            "v1.2.2",
            "v1.2.1",
            "v1.1.4",
            "v1.1.3",
            "v1.1.1",
            "v1.1.0",
            "v1.0.3",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0",
            "v1.0.0rc1",
            "v0.9.7",
            "v0.9.6",
            "v0.9.5",
            "v0.9.3",
            "v0.9.2",
            "v0.9.1",
            "v0.1.7",
            "v0.1.6",
            "v0.1.5",
            "v0.1.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33038.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:48.715255051Z",
      "provider": "osv",
      "references": [
        "https://www.debian.org/security/2021/dsa-4922",
        "https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa",
        "https://gitlab.com/mailman/hyperkitty/-/issues/380",
        "https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-33038",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384658,
  "published_at": "2021-05-26T14:15:08.913+00:00"
}