Mastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.5.x branch prior to 4.5.8 and on the 4.4.x branch prior to 4.4.15, an attacker that knows of a quote before it has reached a server can prevent it from being correctly processed on that server. The vulnerability has been patched in Mastodon 4.5.8 and 4.4.15.
Mastodon 4.3 and earlier are not affected because they do not support quotes.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Joinmastodon Mastodon
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
|
4.4.0
|
4.4.15
|
|
Joinmastodon Mastodon
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
|
4.5.0
|
4.5.8
|