CVE-2023-42451
HIGH7.5EPSS 0.31%Mastodon Invalid Domain Name Normalization vulnerability
Published: 3/6/2024Modified: 3/20/2026
Description
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, 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 contain a patch for this issue.
Affected packages (1)
- Bitnami/mastodonfrom 0, < 3.5.14, >= 4.0.0, < 4.0.10, >= 4.1.0, < 4.1.8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |