{"id":"CVE-2026-72915","state":"PUBLISHED","title":"Mastodon: Personally-identifying information disclosure due to incorrect access control validation","description":"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.","publishedAt":"2026-08-10T21:16:19.820Z","updatedAt":"2026-08-11T17:09:10.053Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["mastodon mastodon"],"affected":[{"vendor":"mastodon","product":"mastodon","versions":[{"version":">= 4.6.0-beta.1, < 4.6.4","status":"affected"}]}],"references":["https://github.com/mastodon/mastodon/security/advisories/GHSA-hx34-2pfw-2qfj","https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074","https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b","https://github.com/mastodon/mastodon/releases/tag/v4.6.4","https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72915.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72915","state":"PUBLISHED","datePublished":"2026-08-10T21:16:19.820Z","dateUpdated":"2026-08-11T17:09:10.053Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-10T17:57:26.143Z"},"containers":{"cna":{"title":"Mastodon: Personally-identifying information disclosure due to incorrect access control validation","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"mastodon","product":"mastodon","versions":[{"version":">= 4.6.0-beta.1, < 4.6.4","status":"affected"}]}],"references":[{"url":"https://github.com/mastodon/mastodon/security/advisories/GHSA-hx34-2pfw-2qfj","name":"https://github.com/mastodon/mastodon/security/advisories/GHSA-hx34-2pfw-2qfj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074","name":"https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074","tags":["x_refsource_MISC"]},{"url":"https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b","name":"https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b","tags":["x_refsource_MISC"]},{"url":"https://github.com/mastodon/mastodon/releases/tag/v4.6.4","name":"https://github.com/mastodon/mastodon/releases/tag/v4.6.4","tags":["x_refsource_MISC"]},{"url":"https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1","name":"https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-10T21:16:19.820Z"},"source":{"advisory":"GHSA-hx34-2pfw-2qfj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T17:08:55.302583Z","id":"CVE-2026-72915","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-11T17:09:10.053Z"}}]}}}