CVE-2026-72914
Mastodon: Exhausting data by an unauthenticated request to the admin retention API
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 10, 2026
- Updated
- Aug 11, 2026
- Reserved
- Aug 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
mastodonmastodon |
|
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
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