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.

According to its self-reported version number, the Mastodon application running on the remote host is prior to 3.5.14 or 4.0.x prior to 4.0.10 or 4.1.x prior to 4.1.8. It is, therefore, affected by multiples vulnerabilities :

- A Stored XSS through the translation feature - A Server-side request forgery - An Invalid domain name normalization

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
114489	Mastodon < 4.1.8 Multiples Vulnerabilities	Web App Scanning	Component Vulnerability	high
114488	Mastodon < 4.0.10 Multiples Vulnerabilities	Web App Scanning	Component Vulnerability	high
114487	Mastodon < 3.5.14 Multiples Vulnerabilities	Web App Scanning	Component Vulnerability	high

Detections

Analytics

CVE-2023-42451

high

Tenable Plugins

high

high

high