{"id":"BIT-mastodon-2026-72914","summary":"Mastodon: Exhausting data by an unauthenticated request to the admin retention API","details":"Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0, the administrative statistics endpoints handled by Api::V1::Admin::MeasuresController and Api::V1::Admin::RetentionController checked authorization only after beginning expensive calculations. Anonymous callers could submit keys, start_at, and end_at parameters that caused long-running SQL queries in Admin::Metrics::Measure, Admin::Metrics::Retention, and Admin::Metrics::Dimension::BaseDimension, allowing repeated requests to exhaust server resources. This issue is fixed in versions 4.4.21, 4.5.14, 4.6.4, and 4.7.0.","aliases":["CVE-2026-72914","GHSA-7jvv-fhmg-wpfw"],"modified":"2026-08-17T08:10:44.107969763Z","published":"2026-08-17T05:46:36.585Z","database_specific":{"cpes":["cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"https://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892"},{"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/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0d"},{"type":"WEB","url":"https://github.com/mastodon/mastodon/releases/tag/v4.4.21"},{"type":"WEB","url":"https://github.com/mastodon/mastodon/releases/tag/v4.5.14"},{"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-7jvv-fhmg-wpfw"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72914"}],"affected":[{"package":{"name":"mastodon","ecosystem":"Bitnami","purl":"pkg:bitnami/mastodon"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.4.21"},{"introduced":"4.5.0"},{"fixed":"4.5.14"},{"introduced":"4.6.0"},{"fixed":"4.6.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mastodon/BIT-mastodon-2026-72914.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}