{"id":"CVE-2026-104817","published":"2026-10-13T19:17:55.697","lastModified":"2026-10-16T20:04:29.760","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-405","CWE-770","CWE-918"],"vendors":[],"products":[],"references":[{"url":"https://github.com/misskey-dev/misskey/commit/a12ee2e5d72c40252e11a164b2231667c9697667","tags":[]},{"url":"https://github.com/misskey-dev/misskey/releases/tag/2026.7.0","tags":[]},{"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-4x7v-qx8f-g3p8","tags":[]}],"exploitRefs":[{"url":"https://github.com/misskey-dev/misskey/commit/a12ee2e5d72c40252e11a164b2231667c9697667","tags":[]},{"url":"https://github.com/misskey-dev/misskey/releases/tag/2026.7.0","tags":[]},{"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-4x7v-qx8f-g3p8","tags":[]}],"hasPoc":true,"ai":null}