HIGH 8.7 NVD
CVE-2026-104817
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-siz
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.
References
- https://github.com/misskey-dev/misskey/commit/a12ee2e5d72c40252e11a164b2231667c9697667
- https://github.com/misskey-dev/misskey/releases/tag/2026.7.0
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-4x7v-qx8f-g3p8
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-10-13 via NVD.
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