Discourse Patreon vulnerable to improper validation of email during Patreon authentication

{
  "id": "6e8b79b99f1aa8c426f800e6175e38ddccda237c686c2b13e8568b4254d9a1ac",
  "url": "https://osv.dev/vulnerability/CVE-2022-39355",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Discourse Patreon vulnerable to improper validation of email during Patreon authentication",
    "summary": "Discourse Patreon enables syncronization between Discourse Groups and Patreon rewards. On sites with Patreon login enabled, an improper authentication vulnerability could be used to take control of a victim's forum account. This vulnerability is patched in commit number 846d012151514b35ce42a1636c7d70f6dcee879e of the discourse-patreon plugin. Out of an abundance of caution, any Discourse accounts which have logged in with an unverified-email Patreon account will be logged out and asked to verify their email address on their next login. As a workaround, disable the patreon integration and log out all users with associated Patreon accounts.",
    "evidence": "osv:CVE-2022-39355",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2022-39355",
      "aliases": [
        "CVE-2022-39355",
        "GHSA-fvj9-f67v-qpr4"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/discourse/discourse-patreon",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "846d012151514b35ce42a1636c7d70f6dcee879e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "846d012151514b35ce42a1636c7d70f6dcee879e"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "846d012151514b35ce42a1636c7d70f6dcee879e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-39355.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.626549308Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39355.json",
        "https://github.com/discourse/discourse-patreon/security/advisories/GHSA-fvj9-f67v-qpr4",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-39355",
        "https://github.com/discourse/discourse-patreon/commit/846d012151514b35ce42a1636c7d70f6dcee879e"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-287"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39355.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-39355",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489038,
  "published_at": "2022-10-26T00:00:00+00:00"
}