CVE-2026-104817
Severity not reportedMisskey is an open source, federated social media platform.
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 products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/misskey-dev/misskey/commit/a12ee2e5d72c40252e11a164b2231667c9697667 security-advisories@github.com
- https://github.com/misskey-dev/misskey/releases/tag/2026.7.0 security-advisories@github.com
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-4x7v-qx8f-g3p8 security-advisories@github.com