{"id":"CVE-2026-72915","summary":"Mastodon: Personally-identifying information disclosure due to incorrect access control validation","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.","aliases":["GHSA-hx34-2pfw-2qfj"],"modified":"2026-08-12T04:24:51.857839649Z","published":"2026-08-10T21:16:19.820Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72915.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-200"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mastodon/mastodon","events":[{"introduced":"52aa8a44bbd0c9a6673cbd9b7c088020be938799"},{"fixed":"467c933459c7d0e5513475b9e4888afaedfb1074"},{"fixed":"930aa9fee26bf9eaefe27826fa1061288d83373b"},{"fixed":"827f63a8fe976e07921ab0f5c9fcca8420c56858"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"4.6.0-beta.1"},{"fixed":"4.6.4"}]}}],"versions":["v4.6.3","v4.6.2","v4.6.1","v4.6.0","v4.6.0-rc.2","v4.6.0-rc.1","v4.6.0-beta.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-72915.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}