CVE-2023-36460
Mastodon vulnerable to arbitrary file creation through media attachments
9.9
CRITICAL
CVSS 3.1
EPSS 44.8%
Description
Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 3.5.0 and prior to versions 3.5.9, 4.0.5, and 4.1.3, attackers using carefully crafted media files can cause Mastodon's media processing code to create arbitrary files at any location. This allows attackers to create and overwrite any file Mastodon has access to, allowing Denial of Service and arbitrary Remote Code Execution. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this issue.
How to fix CVE-2023-36460
To remediate CVE-2023-36460, upgrade the affected package to a fixed version below.
- —upgrade to 3.5.9 or later
Is CVE-2023-36460 being exploited?
Moderate — EPSS is 44.8%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- >= 3.5.0, < 3.5.9, >= 4.0.0, < 4.0.5, >= 4.1.0, < 4.1.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |