CVE-2023-42451

HighCVSS 7.5/10Last modified Jun 17, 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-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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-706

Affected software

Vendor	Product	Versions
mastodon	mastodon	< 3.5.14; >= 4.0.0, < 4.0.10; >= 4.1.0, < 4.1.8; >= 4.2.0-beta1, < 4.2.0-rc2

References

Timeline

Published: Sep 19, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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