Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Due to insufficient origin validation in all Mastodon, attackers can impersonate and take over any remote account. Every Mastodon version prior to 3.5.17 is vulnerable, as well as 4.0.x versions prior to 4.0.13, 4.1.x version prior to 4.1.13, and 4.2.x versions prior to 4.2.5.

According to its self-reported version number, the version of Mastodon running on the remote host is prior to 3.5.17 or 4.0.x prior to 4.0.13 or 4.1.x prior to 4.1.13 or 4.2.x prior to 4.2.5. Therefore, it may be affected by a remote user impersonation and takeover.

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
114482	Mastodon < 4.2.5 Authentication Bypass	Web App Scanning	Component Vulnerability	critical
114481	Mastodon < 4.1.13 Authentication Bypass	Web App Scanning	Component Vulnerability	critical
114480	Mastodon < 3.5.17 Authentication Bypass	Web App Scanning	Component Vulnerability	critical

Detections

Analytics

CVE-2024-23832

critical

Tenable Plugins

critical

critical

critical