{"id":"BIT-mastodon-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 until 4.6.4 and 4.7.0, 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.","aliases":["CVE-2026-72915","GHSA-hx34-2pfw-2qfj"],"modified":"2026-08-17T08:10:34.823291698Z","published":"2026-08-17T05:46:38.079Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074"},{"type":"WEB","url":"https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b"},{"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":"WEB","url":"https://github.com/mastodon/mastodon/security/advisories/GHSA-hx34-2pfw-2qfj"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72915"}],"affected":[{"package":{"name":"mastodon","ecosystem":"Bitnami","purl":"pkg:bitnami/mastodon"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.6.0"},{"fixed":"4.6.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mastodon/BIT-mastodon-2026-72915.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}],"schema_version":"1.9.0"}