CVE-2023-42450

MEDIUM

Mastodon 4.2.0-beta1 to 4.2.0-rc1 - HTTP Request Injection

Title source: manual
STIX 2.1

Description

Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused deputy attacks if the server configuration includes `ALLOWED_PRIVATE_ADDRESSES` to allow access to local exploitable services. Version 4.2.0-rc2 has a patch for the issue.

References (2)

Core 2

Scores

CVSS v3 5.4
EPSS 0.0039
EPSS Percentile 30.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-113 CWE-918
Status published
Products (1)
joinmastodon/mastodon 4.2.0 beta1 (4 CPE variants)
Published Sep 19, 2023
Tracked Since Feb 18, 2026