Description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.11, 4.4.18, and 4.3.24, a DoS can be triggered by (Uncaught Exception vulerability), due to missing exception handling in the math sanitizer. Malformed nodes can result in a DoS of a whole server or targeted users services, depending on the type of action that includes the malformed nodes and the services interacting with it. This vulnerability is fixed in 4.5.11, 4.4.18, and 4.3.24.
Severity (CVSS)
| Base score | 7.5 |
|---|---|
| Severity | High |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Provided by | CNA |
Weaknesses
- CWE-248 — CWE-248: Uncaught Exception
Affected products
| Vendor | Product | Versions |
|---|---|---|
| mastodon | mastodon | >= 4.5.0-beta.1, < 4.5.11; >= 4.4.0-beta.1, < 4.4.18; < 4.3.24 |
References
- https://github.com/mastodon/mastodon/security/advisories/GHSA-qrgq-9fx2-vf2r (x_refsource_CONFIRM)
Generated from the official CVE List on 25 Jun 2026 10:14 UTC.