{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.6.0-beta.1"
              },
              {
                "fixed": "4.6.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "52aa8a44bbd0c9a6673cbd9b7c088020be938799"
            },
            {
              "fixed": "467c933459c7d0e5513475b9e4888afaedfb1074"
            },
            {
              "fixed": "930aa9fee26bf9eaefe27826fa1061288d83373b"
            },
            {
              "fixed": "827f63a8fe976e07921ab0f5c9fcca8420c56858"
            }
          ],
          "repo": "https://github.com/mastodon/mastodon",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hx34-2pfw-2qfj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72915.json"
  },
  "details": "Mastodon is a free, open-source social network server based on ActivityPub. From 4.6.0-beta.1 until 4.6.4 and 4.7.0-beta.1, any logged-in local user could use the show action in app/controllers/admin/collections_controller.rb to access personally identifying information about another local user in a collection because the controller used the general collection policy instead of the admin collection policy namespace. The exposed data included the other user's current email address and last-used IP address. This issue is fixed in versions 4.6.4 and 4.7.0-beta.1.",
  "id": "CVE-2026-72915",
  "modified": "2026-08-13T03:51:49.190840185Z",
  "published": "2026-08-10T21:16:19.820Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.6.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72915.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-hx34-2pfw-2qfj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72915"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mastodon: Personally-identifying information disclosure due to incorrect access control validation"
}