{"id":"CVE-2026-72914","state":"PUBLISHED","title":"Mastodon: Exhausting data by an unauthenticated request to the admin retention API","description":"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-beta.1, 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-beta.1.","publishedAt":"2026-08-10T21:13:20.856Z","updatedAt":"2026-08-11T13:24:54.383Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["mastodon mastodon"],"affected":[{"vendor":"mastodon","product":"mastodon","versions":[{"version":"< 4.4.21","status":"affected"},{"version":">= 4.5.0-beta.1, < 4.5.14","status":"affected"},{"version":">= 4.6.0-beta.1, < 4.6.4","status":"affected"}]}],"references":["https://github.com/mastodon/mastodon/security/advisories/GHSA-7jvv-fhmg-wpfw","https://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892","https://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074","https://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373b","https://github.com/mastodon/mastodon/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0d","https://github.com/mastodon/mastodon/releases/tag/v4.4.21","https://github.com/mastodon/mastodon/releases/tag/v4.5.14","https://github.com/mastodon/mastodon/releases/tag/v4.6.4","https://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1"],"weaknesses":["CWE-405","CWE-770"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72914.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72914","state":"PUBLISHED","datePublished":"2026-08-10T21:13:20.856Z","dateUpdated":"2026-08-11T13:24:54.383Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-10T17:57:26.143Z"},"containers":{"cna":{"title":"Mastodon: Exhausting data by an unauthenticated request to the admin retention API","descriptions":[{"lang":"en","value":"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-beta.1, 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-beta.1."}],"affected":[{"vendor":"mastodon","product":"mastodon","versions":[{"version":"< 4.4.21","status":"affected"},{"version":">= 4.5.0-beta.1, < 4.5.14","status":"affected"},{"version":">= 4.6.0-beta.1, < 4.6.4","status":"affected"}]}],"references":[{"url":"https://github.com/mastodon/mastodon/security/advisories/GHSA-7jvv-fhmg-wpfw","name":"https://github.com/mastodon/mastodon/security/advisories/GHSA-7jvv-fhmg-wpfw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892","name":"https://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892","tags":["x_refsource_MISC"]},{"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/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0d","name":"https://github.com/mastodon/mastodon/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0d","tags":["x_refsource_MISC"]},{"url":"https://github.com/mastodon/mastodon/releases/tag/v4.4.21","name":"https://github.com/mastodon/mastodon/releases/tag/v4.4.21","tags":["x_refsource_MISC"]},{"url":"https://github.com/mastodon/mastodon/releases/tag/v4.5.14","name":"https://github.com/mastodon/mastodon/releases/tag/v4.5.14","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":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-405","lang":"en","description":"CWE-405: Asymmetric Resource Consumption (Amplification)","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-10T21:13:20.856Z"},"source":{"advisory":"GHSA-7jvv-fhmg-wpfw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T13:24:19.660748Z","id":"CVE-2026-72914","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":"2026-08-11T13:24:54.383Z"}}]}}}