CVE-2026-72914

Summary

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 Software

Weaknesses

• CWE-405: CWE-405: Asymmetric Resource Consumption (Amplification)
• CWE-770: CWE-770: Allocation of Resources Without Limits or Throttling

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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