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-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.

CVSS

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

13 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 19:17

Updated : 2026-10-16 20:04

NVD link : CVE-2026-104817

Mitre link : CVE-2026-104817

CVE.ORG link : CVE-2026-104817

JSON object : View

Products Affected

No product.

CWE

CWE-405

Asymmetric Resource Consumption (Amplification)

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-918

Server-Side Request Forgery (SSRF)

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