CVE-2023-42450CWE-113CWE-918

Mastodon Server-Side Request Forgery vulnerability

Medium · published September 19, 2023

CVSS v3.1
5.4
EPSS
0%
Percentile
38.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00460 · 38.9th percentile
Weaknesses
CWE-113 · Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'); CWE-918 · Server-Side Request Forgery (SSRF)
Published
2023-09-19T15:53Z
EPSS history
Timeline
  • 19 SEP 15:53Z
    Mastodon Server-Side Request Forgery vulnerability
    cvelistv5