CVE-2023-42451

Mastodon Invalid Domain Name Normalization vulnerability

State: Published
Severity: 7.4 High
Published: Sep 19, 2023
Updated: Sep 24, 2024
Reserved: Sep 8, 2023

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.

Scores

CVSS	Score	Vector	Source
3.1	7.4 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-706 Use of Incorrectly-Resolved Name or Reference

Affected Products

Product	Versions
mastodonmastodon	< 3.5.14Affected >= 4.0.0, < 4.0.10Affected >= 4.1.0, < 4.1.8Affected >= 4.2.0-beta1, < 4.2.0-rc2Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.