| Package | Affected versions | Patched versions |
|---|---|---|
| mastodon | = 4.2.0≥ 4.0.0, < 4.0.10≥ 4.1.0, < 4.1.8< 3.5.14 | 4.0.104.1.83.5.14 |
Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0-rc2, under certain circumstances, attackers can exploit a flaw in domain name normalization to spoof domains they do not own. Versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0-rc2 contain a patch for this issue.
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