Discourse vulnerable to multisite DoS by spamming backups

{
  "id": "b3f868285a92e14e65dd0bfeb53d16c759b1f175069fe94146d99429ccbdaea7",
  "url": "https://osv.dev/vulnerability/CVE-2023-28107",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Discourse vulnerable to multisite DoS by spamming backups",
    "summary": "Discourse is an open-source discussion platform. Prior to version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a site using multisite, then it can affect the whole cluster. The vulnerability is patched in version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.",
    "evidence": "osv:CVE-2023-28107",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-28107",
      "aliases": [
        "BIT-discourse-2023-28107",
        "CVE-2023-28107",
        "GHSA-cp7c-fm4c-6xxx"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/discourse/discourse",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e54f52a756c032d7f35c0907b03a7dc9f2ea65e5"
                },
                {
                  "fixed": "0bd64788d2b4680c04fbef76314a24884d65fed9"
                },
                {
                  "fixed": "78a3efa7104eed6dd3ed7a06a71e2705337d9e61"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "stable < 3.0.2"
                      },
                      {
                        "last_affected": "stable < 3.0.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "beta < 3.1.0.beta3"
                      },
                      {
                        "last_affected": "beta < 3.1.0.beta3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "tests-passed < 3.1.0.beta3"
                      },
                      {
                        "last_affected": "tests-passed < 3.1.0.beta3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0bd64788d2b4680c04fbef76314a24884d65fed9"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "78a3efa7104eed6dd3ed7a06a71e2705337d9e61"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.1.0-beta1",
            "3.1.0-beta2",
            "beta < 3.1.0.beta3",
            "stable < 3.0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-28107.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.281246149Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28107.json",
        "https://github.com/discourse/discourse/security/advisories/GHSA-cp7c-fm4c-6xxx",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-28107",
        "https://github.com/discourse/discourse/commit/0bd64788d2b4680c04fbef76314a24884d65fed9",
        "https://github.com/discourse/discourse/commit/78a3efa7104eed6dd3ed7a06a71e2705337d9e61",
        "https://github.com/discourse/discourse/pull/20700",
        "https://github.com/discourse/discourse/pull/20701"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28107.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-28107",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 510828,
  "published_at": "2023-03-17T16:23:31.324+00:00"
}