CVE-2023-42451 | BDVDB-2026-212161 Detail

mastodonmastodon

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#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-706 Use of Incorrectly-Resolved Name or Reference

References#

Exploit#

No public exploit known

History#

Version 12023-09-19Record published in the CVE List.
Version 22024-09-24Most recent update recorded in the CVE List.

Published

Published: 2023-09-19
Last modified: 2024-09-24

Vendor information

Vendor: mastodon
Product: mastodon

All mastodon vulnerabilities

Score

7.4 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 52.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 3.5.14
Fixed
Not stated
Vulnerable
>= 4.0.0, < 4.0.10
Fixed
Not stated
Vulnerable
>= 4.1.0, < 4.1.8
Fixed
Not stated
Vulnerable
>= 4.2.0-beta1, < 4.2.0-rc2
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.4 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).