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Status published
High
CVE-2023-42451
Mastodon Invalid Domain Name Normalization vulnerability
Vulnerability 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-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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
mastodon
View all reports →Affected Software
mastodon
Vulnerable Versions:
< 3.5.14, >= 4.0.0, < 4.0.10, >= 4.1.0, < 4.1.8, >= 4.2.0-beta1, < 4.2.0-rc2
Timeline
Official Publish:
September 19th, 2023
Last Modified:
September 24th, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.