CVE-2023-42450
Mastodon Server-Side Request Forgery vulnerability
7.5
HIGH
CVSS 3.1
EPSS 0.38%
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.
How to fix CVE-2023-42450
To remediate CVE-2023-42450, upgrade the affected package to a fixed version below.
- —upgrade to 4.2.0 or later
Is CVE-2023-42450 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 4.2.0-beta1, < 4.2.0, >= 4.2.0-beta2, < 4.2.0, >= 4.2.0-beta3, < 4.2.0, >= 4.2.0-rc1, < 4.2.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |