CVE-2026-57575

Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a Server-Side Request Forgery (SSRF) vulnerability in URL preview functionality in UrlPreviewService. Due to missing network restrictions before establishing outbound connections, a remote attacker can cause the Misskey server to initiate HTTP requests to loopback, private, or link-local services. Because IP address validation takes place after the request has been sent and the process is subsequently rejected, no sensitive internal data is believed to be transmitted back or exposed to the attacker. This issue is fixed in version 2026.6.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/misskey-dev/misskey/commit/1eac4ccf513a067b9f7b7d123057c09a389fccee
https://github.com/misskey-dev/misskey/releases/tag/2026.6.0
https://github.com/misskey-dev/misskey/security/advisories/GHSA-jvcx-f39m-5xrj

Configurations

No configuration.

History

10 Jul 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-10 21:16

Updated : 2026-07-14 15:17

NVD link : CVE-2026-57575

Mitre link : CVE-2026-57575

CVE.ORG link : CVE-2026-57575

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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