Description (CNA)
Misskey is an open source, federated social media platform. From 12.112.1 until 2026.7.0, the unauthenticated fetch-rss API lacks rate limiting and response-size restrictions and performs synchronous XML parsing. An attacker can trigger unbounded outbound HTTP requests and synchronous parsing, exhausting instance resources, amplifying requests toward third-party servers, or probing network-reachable services even when federation is disabled. This issue is fixed in version 2026.7.0.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| misskey-dev / misskey | affected >= 12.0.0, <= 13.14.2; affected >= 2023.9.0-beta.1, < 2026.7.0 |
CWE
CWE-405, CWE-770, CWE-918
References
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-4x7v-qx8f-g3p8
- https://github.com/misskey-dev/misskey/commit/a12ee2e5d72c40252e11a164b2231667c9697667
- https://github.com/misskey-dev/misskey/releases/tag/2026.7.0
ADP enrichment
No English description supplied.
No references supplied.